<p><strong>This is a simplified version of the former CRM CZ 70006. Certified values for the most stable analytes have been experimentally confirmed in three laboratories.</strong></p>
<p>The total toxicity equivalent is approximately 150 ng/kg.</p>
<ul>
<li><strong>Price:</strong> 8,717.00 CZK excluding VAT</li>
<li><strong>Analytes: 2,3,7,8 TeCDD; 1,2,3,7,8 PeCDD; 1,2,3,4,7,8 HxCDD; 1,2,3,4,7,8 HxCDD; 1,2,3,6,7,8 HxCDD; 1,2,3,4,8,9 HxCDD; 1,2,3,4,6,7,8 HpCDD; OCDD; 2,3,7,8 TeCDF ; 1,2,3,7,8 PeCDF; 2,3,4,7,8 PeCDF; 1,2,3,74,7,8 HxCDF; 1,2,3,6,7,8 HxCDF; 1,2,3,7,8,9 HxCDF; 2,3,4,6,7,8 HxCDf; 1,2,3,4,6,7,8 HpCDF; 1,2,3,4,7,8,9 HpCDF; OCDF; PCB 77; PCB 81; PCB 126; PCB 169; PCB 105; PCB 114; PCB 118; PCB 123; PCB 156; PCB 157; PCB 167; PCB 189.</strong></li>
</ul>
<h5><strong>Packaging:</strong></h5>
<p>60 g of waste sludge in powder form with particle size below 100 μm in a dark glass bottle.</p>
<p>The sample is radiation stabilised with a dose of 25 kGy.</p>
<h5><strong>Use:</strong></h5>
<p>This certified reference material is intended to provide metrological continuity, validation of analytical methods and assignment of values to other materials of similar composition.</p>
<h5><strong>Recommended analytical methods for measured quantities:</strong></h5>
<ul>
<li><a href="https://gcms.labrulez.com/library?instrumentationItems=3-5&amp;search=sludge"><strong>HRGC/HRMS</strong></a></li>
</ul>
<h5><strong>Specifications:</strong></h5>
<ul>
<li><strong>Expiration date:</strong> 5 years from date of manufacture</li>
</ul>
<h5><strong>Metrological continuity:</strong></h5>
<p>The majority of laboratories used the BCR 614(S0-S5) certified reference material for calibration, followed by BCR 365 and ERM AC 820-822 materials. All laboratories analyzed the BCR-677 matrix certified reference material at the same time as the samples provided.</p>
<h5><strong>Sample preparation for analysis:</strong></h5>
<p>The following EPA procedures 1613, 1668, 8280A, 8290 or equivalent methods are most commonly used.</p>
<h5><strong>Homogeneity and stability:</strong></h5>
<p>Homogeneity and short-term stability have been demonstrated, according to TNI guideline ISO 35.</p>
<h5><strong>Storage and instructions for use:</strong></h5>
<p>The CRM must be stored and kept in its original packaging at 2-30°C. The material shall be be analysed as delivered and its dry weight should be determined in unanalysed proportions by drying at 105°C to constant weight. It is recommended that the material in the vial be rehomogenised by mechanical shaking of the contents before each use. The vial should be opened 1-2 minutes after rehomogenisation to prevent fine dust particles from escaping from the vial and settling into the surroundings. As this is a toxic material, only personnel trained to handle toxic materials should handle the material.</p>
<h5><strong>Certified and indicative values and their uncertainties:</strong></h5>
<p>Certified values for selected PCDDs, PCDFs and PCBs are given in Table 1. The certified values of the analytes were derived from the results of an inter-laboratory comparison in which a total of 11 selected laboratories participated. These combined uncertainties are dominated by the contribution of uncertainty in the characterisation of the respective property value.</p>
<p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Analytika_Matricovy_certifikovany_referencni_material_odpadni_kal_Tabulka_1_Certifikovane_hodnoty_obsahu_vybranych_PCDD_PCDF_PCB_a_jejich_pridruzene_ee25708f7d.jpg" alt="Analytical: Table 1: Certified values for selected PCDDs, PCDFs, PCBs and their associated uncertainties"/></p>
<h5><strong>Note:</strong></h5>
<p>More detailed information on the preparation, homogeneity assessment, stability and characterization of this CRM is provided in the certification report, which is available to interested parties upon request.</p>


Matrix certified reference material for sewage sludge

<p><strong>Certified reference material of MCT oil with medium-long chain triglycerides AN-BM04 prepared by the method of addition of hemp extract and individual phytocannabinoids. Selected cannabinoids are certified.</strong></p>
<ul>
<li><p><strong>Analytes: CBD, CBDA, Δ9-THC, Δ9-THCA-A, CBN, CBG, CBC, CBGA, CBDV, CBCA, THCV, CBL.</strong></p>
</li>
<li><p><strong>Packaging:</strong> 3.0 ml of oil in a dark glass bottle.</p>
</li>
<li><p><strong>Use:</strong> This certified reference material is intended to provide metrological continuity, validate analytical methods and assign values to other materials of similar composition.</p>
</li>
<li><p><strong>Recommended analytical methods for the measurands: <a href="https://lcms.labrulez.com/library?instrumentationItems=27&amp;search=cannabinoids">Liquid chromatography</a></strong></p>
</li>
<li><p><strong>Expiration date:</strong> 2 years from the date of manufacture</p>
</li>
</ul>
<p>This material has been prepared in cooperation with the Metrology and Testing Laboratory at <a href="https://lcms.labrulez.com/companies/58"><strong>Department of food analysis and nutrition, University of Chemical Technology Prague</strong></a>, accredited according to ČSN EN ISO/IEC 17025:2018, where the homogeneity and stability of the material was also tested.</p>
<p>More detailed information on the preparation, homogeneity testing and characterization of this CRM is provided in the certification report, which is available to interested parties upon request.</p>
<p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Analytika_Kanabinoidy_v_MTC_oleji_METRANAL_CRM_ff01415316.jpg" alt="Analytika: Cannabinoids in MTC oil (METRANAL - CRM)"/></p>
<h5><strong>Metrological follow-up:</strong></h5>
<p>Metrological continuity is ensured by the use of certified calibration solutions for calibration of measurement methods (direct link to SI unit) or by parallel analysis of matrix CRMs (RM) of similar composition.</p>
<h5><strong>Homogeneity and stability:</strong></h5>
<p>Homogeneity and short-term stability have been demonstrated according to TNI guideline ISO 35.</p>
<h5><strong>Certified and indicative values and their uncertainties:</strong></h5>
<p>The certified and indicative values for each cannabinoid are given in Table 1. The overall averages of the received laboratory values were assigned the status of certified and indicative values when the following criteria were met: a certified value was derived from at least five received data sets, an indicative value from at least three received data sets. The combined uncertainties listed are dominated by the contribution of uncertainty in the characterisation of the relevant property value. The certification study was conducted at international level in the form of an inter-laboratory comparison, with the participation of laboratories with quality assured testing in the field of cannabinoid analysis.</p>
<p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Analytika_Tabulka_c_1_Certifikovane_a_indikativni_hodnoty_obsahu_jednotlivych_kanabinoidu_6dc4a5def4.jpg" alt="Analytical: Table 1 Certified and indicative values for the content of individual cannabinoids.jpg"/></p>
<p>The CRM will be monitored for its shelf life. If there are significant changes to the reported values, Analytika, Ltd. will notify the purchaser.</p>
<h5><strong>Storage and instructions for use:</strong></h5>
<p>The CRM must be kept and stored in its original packaging at a temperature below -12 °C. The material should be analysed as delivered and should be tempered to 20 °C and rehomogenised by mechanical shaking of the contents before taking an aliquot for analysis. At low temperatures, a solid fraction may be excluded, which will dissolve again on re-extempering. In order to ensure sufficient homogeneity, the recommended minimum weight for analysis is 50 mg.</p>


Matrix certified oil reference material for cannabinoid content

<h4><strong>Description and use:</strong></h4>
<p>These reference materials are aqueous calibration solutions of individual elements and ions with certified/assigned concentration value in the range from 1 mg/l to 10 g/l or 1mg/kg to 10g/kg (m/m) and aqueous calibration solutions of combinations of elements and/or ions with certified/assigned concentrations at various levels relevant to particular analytical requirements. They can be used by analytical techniques analysing aqueous solutions such as atomic spectrometry (<a href="https://icpms.labrulez.com/library?instrumentationItems=85"><strong>AAS</strong></a>, AFS, <a href="https://icpms.labrulez.com/library?instrumentationItems=84"><strong>ICP-OES</strong></a>, <a href="https://icpms.labrulez.com/library?instrumentationItems=83"><strong>ICP-MS</strong></a>), molecular absorption spectrometry, ion chromatography and some selected electroanalytical methods.</p>
<h4><strong>Starting primary substances and other applied materials:</strong></h4>
<p>Metals or compounds (in mass calculated from the content of the certified component and a target volume of the batch) are used as starting materials for the production of these RM. High purity metals with a declared assay of minimum 99.95 % are preferred and compounds of a defined and constant stoichiometry and declared assay and/or impurities content are used when a suitable metal is not available [1, 2]. The supplier of primary substances must comply with ISO 17034 [3], namely to employ a certified Quality Management System. Each supply of the primary substance must be accompanied with complete documentation, including an identification of sources and treatment, assay and impurity contents. As required by this Guide, the supplier’s data are verified by the CRM producer and by other subcontracted accredited laboratories (e.g. trace metal impurities by spectroscopic methods such as ICP-AES, ICP-MS, AAS, the assay by primary gravimetric or volumetric methods).</p>
<p>Acids (prepared by sub-boiling distillation), other ultrapure chemicals (ammonium hydroxide, hydrogen peroxide, etc.) and deionised water with a resistivity 18 MΩ.cm are further applied in the (C)RM preparation. Their impurity contents are regularly monitored. They are generally negligible (~ 1 μg/l) as compared with the concentration of the certified/assigned constituent.</p>
<h4><strong>Weighing, volume and temperature measurement:</strong></h4>
<p>A class 1 electromechanical analytical balances with a valid verification is used to weigh the primary substances. A performance of this balance is regularly controlled by the Czech Metrology Institute. Mettler weights class F1 (5 g and 100 g) are used for an internal calibration control. Two calibrated mercury or alcoholic thermometers 0 – 50 °C (with a scale division by 0.1 °C), regularly calibrated by authorized institutions are used for the temperature measurement.</p>
<p>All volumetric vessels used (flasks, pipettes, burettes) are of Accuracy Class 1, calibrated by their producers and delivered with a relevant certificate. The calibration of all labware is regularly checked.</p>
<h4><strong>Coding and packaging:</strong></h4>
<p>(C)RMs are delivered in amber HDPE bottles or amber glass bottles whenever an interaction of the analyte with HDPE may be suspected (e.g. mercury, precious metals). Prior to filling, the bottles and caps are leached by HCl (5% v/v) for a longer period, washed repeatedly with deionised water and thoroughly dried. The bottle filled with (C)RM is hermetically closed with a polypropylene screw cap and tightened with parafilm immediately after filling and sealed into reclosable aluminium bag or PE foil. The bottle is labelled with a resistant plastic label containing all data as required by (C)RM standards, i.e. (C)RM and batch codes, volume of the packed unit, type of the matrix, producer identification and contact data, further data and warning symbols when required by specific regulations [4, 5].</p>
<h4><strong>Homogeneity and stability:</strong></h4>
<p>The (C)RM are considered homogeneous due to their physico-chemical character (diluted solutions) and thus a detailed homogeneity testing is not required. This fact is supported by a long-term experience of the producer and other recognized producers of similar materials. In compliance with a recommendation of ISO 17034, homogeneity testing is performed (as prescribed in ISO Guide 35) at randomly chosen solutions and evaluated by ANOVA. </p>
<p>An assumption of stability and the consequent expiration period is based on both over 20 year experience with the preparation of similar RMs and a test of possible instability factors. These factors are of general (e.g. water evaporation by regular weighing of the filled bottle) and specific character (e.g. adsorption and desorption of the particular analyte on the walls of the bottle, precipitation, etc.).</p>
<p>Along with these tests the content of the certified/assigned constituent in the bottle is compared (at least twice during the validity period) with that of a newly prepared batch and/or a corresponding (C)RM form other producers. For these comparisons, both primary analytical methods (gravimetry, titrimetry) and some instrumental methods (ICP-OES, AAS) working in the regime of maximum precision (the application of internal standard, bracketing technique etc.) are used. For selected analytes, an accelerated isochronous stability test (in the temperature range of -20 °C to +40 °C) is realized. Based on these tests, transport conditions for a particular (C)RM are defined.</p>
<h4><strong>Certification, certified and assigned value and their uncertainties:</strong></h4>
<p>The concentration value of CRM/RM are certified/assigned on the basis of gravimetric preparation (refering to ISO Guide 35), i.e. on weighing and volume measurement [6]. They are calculated from an assay of the certified constituent in the primary substance, declared by its supplier and duly verified by the CRM producer. The certified/assigned concentration (m/v) and its uncertainty are expressed in g/l (alternatively in mg/kg) at a temperature of 20 ± 0.1 °C.</p>
<p>The uncertainty of the certified/assigned values is estimated in compliance with ISO and EURACHEM methodologies [7, 8]. It combines the calculated standard uncertainties of the individual CRM/RM preparation steps with an expert estimate of the standard uncertainty of the assay of the certified constituent in the primary substance, usually a dominant contribution. The expanded combined uncertainty calculated using coverage factor k = 2 is expressed as a two-sided half-interval by one significant figure, with the certified value given by the same number of digits.</p>
<p>The particular certified values and uncertainties, mostly at a level of 0.2% (rel.), are specified in the Certificate together with the expiry terms and other relevant information.</p>
<p>The particular assigned values and uncertainties, mostly at a level of 0.5% (rel.), are specified in the Identification sheet together with the expiry terms and other relevant information.</p>
<p>The certified/assigned analyte concentration and its uncertainty is further experimentally verified by means of primary and instrumental analytical methods [9]. However, the results received are not used in the calculation of the certified/assigned value and serve only for the confirmation that this value is true.</p>
<h4><strong>Traceability and quality assurance:</strong></h4>
<p>Direct traceability to SI unit for the weight (1 kg) is secured by using a primary substance within comprehensively verified content of the analyte constituent and by gravimetric method of preparation. This traceability is for each produced batch of (C)RM further confirmed by analytical data acquired from the determination of certified analyte with validated primary and instrumental analytical methods. Only internationally accepted references (SRM NIST, TraceCERT etc.) are used.</p>
<p>The producer operates a certified quality management system ISO 9001 [10] and is accredited according to ISO 17034 [12].</p>
<p>Control analytical laboratory of the producer is accredited according to ISO/IEC 17025 [11].</p>
<h4><strong>Storing and instructions for use:</strong></h4>
<p>This (C)RM must be stored in the original closed bottle (in an upright position) between 5 °C and 30 °C, away from any strong light sources (e.g. sunshine, UV lamp). The producer guarantees declared life time (shelf life) and expiration time (period of validity) provided (C)RM is properly stored and professionally handled. The temperature of the bottle with (C)RM must be 20 ± 0.5 °C before every use. After use, the bottle must be immediately tightly capped. It is recommended to tighten the screw cap with parafilm Do not pipette from the bottle. Do not return removed aliquots to bottle. The user should differentiate between the life time (shelf life) of the particular (C)RM (usually 5 years from the date of production) and expiration time (never more than 24 months from the first opening of the bottle). Both values are presented in the Certificate and Identification sheet. It is necessary to indicate on the Certificate/Identification sheet the date of the first opening of the bottle or aluminium bag and the expiration time, which depends on the date of the first opening. It is necessary to indicate the expiration time on the label of the bottle too.</p>
<p>It is not recommended to use the standard solution when the bottle contains less than 10 % of the solution. Therefore, in case of opaque bottle, it is important to indicate the amount of the solution used, e.g. on the label.</p>
<p>Transpiration through amber HDPE bottles (losses of the solution mass resulting in a gradual increase in the analyte mass fraction) was not observed. It is the producer’s experience that the loss of vapour phase occurs solely around the screw cap of the bottle which is not airtight. Therefore, it is recommended to cover the screw cap and the neck of the bottle with parafilm layer after each opening and put the bottle into the reclosable aluminium bag, if it is delivered in.Safety regulations for transportation, storage, and use of this (C)RM are specified in the respective Safety Data Sheet.</p>


Detailed information about the production of aqueous calibration solutions Astasol®

<p><strong>Multielement certified material in nitric acid and hydrofluoric acid. CRM Mix 23 elements 100mg/l ea., in 5% Nitric acid + 0.2% Hydrofluoric acid, HDPE, 100 ml.</strong></p><h5><strong>All variations</strong></h5><ul><li><strong>30 ml</strong> - <span class="no-price">Contact us for a price</span></li><li><strong>50 ml</strong> - <span class="no-price">Contact us for a price</span></li><li><strong>100 ml</strong> - <span class="no-price">Contact us for a price</span></li><li><strong>250 ml</strong> - <span class="no-price">Contact us for a price</span></li><li><strong>500 ml </strong>- <span class="no-price">Contact us for a price</span></li><li><strong>3 x 30 ml</strong> - <span class="no-price">Contact us for a price</span></li></ul><h4><strong>Intended use:</strong></h4><p>For calibration and validation of analytical methods analysing aqueous solutions such as atomic spectrometry (AAS, AES, ICP-OES, ICP-MS), molecular absorption spectrometry and selected electroanalytical methods.</p><ul><li>Product code: AN9094MFN</li><li>Concentration: 100 mg/l</li><li>Matrix: HNO<sub>3</sub> + HF</li><li>Number of elements: Multi-element<br>Type: CRM</li><li>Volume: 100 ml</li><li>Analytes: As, Be, Ca, Cd, Co, Cr, Cu, Fe, Li, Mg, Mn, Mo, Ni, P, Pb, Sb, Se, Sn, Sr, Ti, Tl, V, Zn</li><li>Expiry: 12 months</li><li>Matrix concentration: 5 % + 0.2 %</li><li>Package: HDPE</li><li>Shelf life: 36 months</li></ul><h4><strong>Starting primary compounds and theirs purities (%):</strong></h4><p>As 99.9999; BeO 99.98; CaCO<sub>3</sub> 99.999; Cd 99.999; Co 99.998; Cr(NO<sub>3</sub>)<sub>3</sub> . xH<sub>2</sub>O 99.99; Cu 99.999; Fe 99.998; Li<sub>2</sub>CO<sub>3</sub> 99.999; Mg 99.98; Mn 99.98; Mo 99.95; Ni 99.995; NH<sub>4</sub>H<sub>2</sub>PO<sub>4</sub> 99.999; Pb 99.999; Sb 99.999, Se 99.995; Sn 99.999; SrCO<sub>3</sub> 99.994; Ti 99.99; TlNO3 99.9995; NH<sub>4</sub>VO<sub>3</sub> 99.95; Zn 99.99</p><h4><strong>Matrix:</strong></h4><p>5% HNO<sub>3</sub> (v/v), prepared from sub boil distilled HNO<sub>3</sub> (ANALPURE®), 0.2% HF (v/v) prepared from sub boil distilled HF (ANALPURE®) and ultrapure demineralized water (resistivity ≥ 18 MΩ.cm, 0.22μm filtered).</p><h4><strong>Certification and traceability:</strong></h4><p>This CRM is certified on the basis of gravimetric preparation. This procedure also ensures a direct traceability to SI unit – kg. Certified values, uncertainties and traceability were further verified by primary analytical methods (gravimetric, titrimetric) as well as by instrumental methods (AAS, AES, ICP-OES) calibrated with independent reference solutions (e.g. SRM NIST, TraceCERT, in-house solid and liquid CRMs). Analytical methods and references used are listed in the following table.</p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Analytika_Certification_and_traceability_ASTASOL_AN_9094_MFN_80eb36f0b2.jpg" alt="Analytika: Certification and traceability ASTASOL AN9094MFN" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Analytika_Certification_and_traceability_ASTASOL_AN_9094_MFN_80eb36f0b2.jpg 206w," sizes="100vw" width="1182" height="895"></p><h4><strong>Trace impurities in bottled solution (in mg/l):</strong></h4><p>Determination of trace impurities was performed by AAS, ICP-OES and ICP-MS. Impurity levels are supplied only for information of the user and should not be used as calibration data.</p><p><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Analytika_Trace_impurities_in_bottled_solution_in_mg_l_ASTASOL_AN_9094_MFN_7ed86f33d1.jpg" alt="Analytika: Trace impurities in bottled solution (in mg/l) ASTASOL AN9094MFN" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Analytika_Trace_impurities_in_bottled_solution_in_mg_l_ASTASOL_AN_9094_MFN_7ed86f33d1.jpg 245w," sizes="100vw" width="1182" height="613"></p><h4><strong>Homogeneity and stability:</strong></h4><p>It has been demonstrated that this CRM is homogeneous and its stability is guaranteed during the whole shelf life provided the solution it kept under conditions presented below.</p><h4><strong>Storing and instruction for use:</strong></h4><p>This CRM must be stored in the original closed bottle between 5 – 30 °C. The producer guarantees a declared shelf life and expiration time provided the CRM is properly stored and professionally handled. The temperature of the solution must be 20 ± 0.5 °C before every use. It is necessary to indicate on this certificate and the label the expiration time, which depends on the date of the first time the aluminium bag was opened. After use, the bottle must be immediately tightly capped, and it is recommended to put it back into the reclosable aluminium bag. It is not recommended to use the standard solution when the bottle contains less than 10 % of the solution. Therefore, in case of non-transparent bottle, it is important to indicate the amount of the solution used, e.g. on the label. Do not pipette from the bottle. Do not return removed aliquots to bottle.</p><h4><strong>Note:</strong></h4><p>Detailed information about the production, homogeneity, stability, coding, characterization and storing of this CRM are described in the document “Detailed information about the production of aqueous calibration solutions ASTASOL®“ which is available for download on the website <a target="_blank" rel="noopener noreferrer" href="https://www.analytika.net/">www.analytika.net</a>.</p><p>&nbsp;</p>

Multielement certified material (Mix 23 elements)

<p><strong>The certified reference material of agricultural soil AN-ZP03 was prepared by spiking selected relevant organic compounds into the original natural matrix. Selected pesticides are certified.</strong></p><h4><strong>Packing:</strong></h4><p>50 g of powder of the respective soil with a particle size of less than 100 μm in amber glass bottle. The sample is stabilized by radiation 25kGy.</p><h4><strong>Intended use:</strong></h4><p>This certified reference materials is intended primarily for use in realizing metrological traceability, validation of analytical methods and the transfer of property values to other materials of similar composition.</p><h4><strong>Recommended analytical methods for method dependent measurements:</strong></h4><p>Gas and liquid chromatography</p><h4><strong>Metrological traceability:</strong></h4><p>Metrological traceability is realized by using certified calibration standards solutions for the calibration of measurement methods used (direct traceability to SI unit) and/or by simultaneous analysis of a matrix CRM (RM) of similar composition.</p><h4><strong>Homogeneity and stability:</strong></h4><p>Homogeneity and short term stability has been demonstrated according to the ISO GUIDE 35. This CRM will be monitored for over the period of its validity.</p><h4><strong>Storing and instruction for use:</strong></h4><p>This CRM has to be stored in original bottle at -18°C (optimal is in a freezer). The materials should be analysed in the "as received" state and their dry weight should be determined on non-analysed aliquots oven-dried at 105°C till the constant weight. The material in the bottle must be rehomogenized before each use by mechanical shaking of the content for 1-2 minutes. The bottle should be opened a minimum of 2 minutes after rehomogenization in order to prevent an escape of fine powder particles from the bottle into the environment and their sedimentation.</p><h4><strong>Certified and indicative values and their uncertainties:</strong></h4><p>The certified and indicative values of selected pesticides are summarized in Table 1 and 2. The overall means evaluated have been given a status of certified and indicative values using the following criteria: data should be available from at least 5 and 3 accepted laboratory means should be available for calculation of the overall mean for certified and indicative value, respectively. At combined uncertainties presented, the contribution of uncertainty of characterization of a particular property value is dominant.</p><h5><strong>Table 1: Certified and indicative values of selected pesticides.</strong></h5><ul><li><strong>Analytes:</strong> concentration [μg/kg] / uncertainty [μg/kg]</li><li><strong>Atrazine:</strong> 450 / 25</li><li><strong>Azoxystrobin:</strong> 281 / 18</li><li><strong>Carbendazim:</strong> 285 / 32</li><li><strong>Diflufenican:</strong> (595) / (82)</li><li><strong>Dimethenamid:</strong> (332) / (45)</li><li><strong>Epoxyconazole:</strong> 191 / 15</li><li><strong>Fenpropidin:</strong> (105) / (11)</li><li><strong>Chlorotoluron:</strong> (80.4) / (9.7)</li><li><strong>Chlorpyrifos:</strong> 353 / 22</li><li><strong>Linuron:</strong> 447 / 32</li><li><strong>Metamitron:</strong> 566 / 30</li><li><strong>Metazachlor:</strong> (775) / (88)</li><li><strong>Methoxyfenozide:</strong> (779) / (103)</li><li><strong>Metconazole:</strong> 270 / 14</li><li><strong>Pendimethalin:</strong> 186 / 12</li><li><strong>Pethoxamid:</strong> (294) / (53)</li><li><strong>Prochloraz:</strong> 195 / 14</li><li><strong>Spiroxamine:</strong> 490 / 46</li><li><strong>Tebuconazole:</strong> 814 / 66</li><li><strong>Terbuthylazine:</strong> 444 / 33</li></ul><p><i>All values corrected to a dry mass at 105°C. Uncertainty – expanded combined uncertainty (k=2) () indicative value.</i></p><h5><strong>Table 2: Indicative values of selected organochlorine pesticides</strong></h5><ul><li><strong>Analytes:</strong> concentration [μg/kg] / uncertainty [μg/kg]</li><li><strong>Gamma-BCH:</strong> 604 / 95</li><li><strong>Delta-BCH:</strong> 640 / 74</li><li><strong>2,4-DDT:</strong> 286 / 33</li><li><strong>4,4-DDT:</strong> 512 / 75</li><li><strong>Endrin:</strong> 423 / 36</li><li><strong>4,4-DDD:</strong> 418 / 60</li></ul><p><i>All values corrected to a dry mass at 105°C. Uncertainty – expanded combined uncertainty (k=2).</i></p><p>This CRM will be monitored for over the period of its validity. If substantive changes of reference values occur, Analytika®, spol. s r.o. will notify the purchaser.</p><h4><strong>Participated laboratories in material characterization and interlaboratory comparison:</strong></h4><ul><li>Analytika, spol. s r.o.</li><li>Agroscope; Environmental Analytics; Zurich</li><li>ALS Czech Republic s.r.o.</li><li>ARISTOTLE UNIVERSITY OF THESSALONIKI; Department of Chemistry, Environmental Pollution Control Laboratory (EPCL)</li><li>ARPAV; Servizio Laboratori Veneto EST; Venezia Mestre</li><li>Benaki Phytopathological Institute; Department of Pesticides Control and Phytopharmacy, Laboratory of Chemical Control of Pesticides,</li><li>Eurofins Environment Testing Finland Oy; LAHTI</li><li>Institut National de la Recherche Agronomique; Laboratoire d´analysis des sols; Arras</li><li>Institute of Environmental Assessment and Water Research; Barcelona</li><li>LABAQUA, S.A.U; POL. IND. LAS ATALAYAS; ALICANTE</li><li>MetropoliLab Oy; Helsinki</li><li>RECETOX, Masaryk University; Brno</li><li>UKZUZ Brno; NRL; Department of Residual Analyses</li><li>University of Bern, Institute of Geography</li><li>University of Bordeaux; Oceanic and Continental Environments and Paleoenvironments (LPTC)</li><li>Wageningen Food Safety Research (WFSR)</li></ul><h4><strong>Note:</strong></h4><p>Detailed information about the production, homogeneity testing and characterization of this CRM are described in the Certification report, which is available on request.</p>

Matrix certified reference material of agricultural soil containing selected pesticides

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Analytika is a Czech company that offers and produces certified reference materials (CRM) and (ultra)pure chemicals for quality control and quality assurance in laboratories, including accredited laboratories.

Our portfolio also includes pipettes and tips, digestors, PFA labware and other equipment for analytical laboratory and trace analysis.

ANALYTIKA

Restek at Dioxin 2026

Bruker at Dioxin 2026

The International School on Mass Spectrometry (IntSMS) 2026

Polymeric, porous, monodisperse particle development and application to reversed-phase separations of biological molecules

Navigating PFAS Restrictions in Packaging and Packaging Waste (PPRW) with Py-GC-MS

Using Targeted Methylation Sequencing to Bring Epigenetic Biomarkers to the Clinic