Analysis of characteristic flavor compounds in coffee peels subjected to different thermal processing treatments based on GC–IMS and HS-SPME–GC–MS combined with chemical pattern recognition

Forced degradation analysis of recombinant adeno-associated virus serotype 8 based on analytical anion exchange chromatography coupled to orthogonal characterization

Combining elemental analysis and molecular techniques to characterize Ancient Egyptian mummification balms

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Determination of Amino Acids (Watrex)

Watrex Prague offers laboratory analysis of amino acids in food and natural materials.

<h4>WI08115 – Determination of Free Amino Acids</h4><ul><li>Determination of free amino acids in submitted samples by ion chromatography.</li><li>Price: 1,500 CZK excl. VAT</li></ul><h4>WI08116 – Determination of Amino Acids in Hydrolysates</h4><ul><li>Determination of amino acids in submitted samples by ion chromatography.</li><li>Price: 1,300 CZK excl. VAT</li></ul><h4>WI08121 – Determination of Free Amino Acids with High Detection Sensitivity (AQC)</h4><ul><li>Performed by pre-column AQC derivatization with fluorescence detection using RP-HPLC.</li><li>Price: 1,800 CZK excl. VAT</li></ul><blockquote>10% discount when submitting 10 or more samples simultaneously.</blockquote><h3>Analysis Conditions</h3><ul><li>HPLC Column: WATREX 250 × 4 mm Amino Acid-AQC 5 µm with guard column 20 × 4 mm</li><li>Eluent A: 0.1 M acetate buffer pH 5.0 (adjusted with H₃PO₄)</li><li>Eluent B: Acetonitrile–water (60:40)</li><li>Flow rate: 2 mL/min</li><li>Temperature: 37 °C</li><li>Gradient: 0 min 5%B; 11.5 min 16%B; 11.75 min 25%B; 15 min 30%B; 17.5 min 35%B; 21 min 50%B; 22 min 100%B; 29 min 100%B; 30 min 5%B; 37 min 5%B</li><li>Pressure: 20–24 MPa</li></ul><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Watrex_HPLC_separace_aminokyselin_AQC_AA_standard_9e9d9f8acb.jpg" alt="Watrex: HPLC separation of amino acids AQC – AA standard" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Watrex_HPLC_separace_aminokyselin_AQC_AA_standard_9e9d9f8acb.jpg 245w," sizes="100vw" width="756" height="437"><blockquote><h3>Services – Laboratory</h3>The Watrex Analytical Laboratory will be happy to perform any of our standard analyses, custom analyses, or assist you with method development.We specialize primarily in liquid chromatography techniques and are ready to meet a wide range of requirements—from method development and optimization, through validation and verification of external methods, to training and troubleshooting.Our laboratory also manufactures and packs its own chromatographic columns and guard columns for basic HPLC modes (reversed phase, normal phase, ion chromatography, and ion exclusion chromatography).<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Watrex_Analyticka_laborator_fc8862fba5.jpg" alt="Watrex: Analytical Laboratory" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Watrex_Analyticka_laborator_fc8862fba5.jpg 245w," sizes="100vw" width="1569" height="637"></blockquote>

Characterization of polymers (Watrex)

Watrex Prague offers laboratory characterization of polymers using GPC.

<h4>WI08112 – Determination of Molecular Weight Distribution of Polymeric Materials</h4><ul><li>Determination by GPC method in water and THF, or optionally in other solvents upon request.</li><li>Each set of measurements requires calibration (WI08113).</li><li>Price: 3,300 CZK excl. VAT</li></ul><h4>WI08113 – Calibration for Molecular Weight Distribution of Polymeric Materials</h4><ul><li>Calibration using dextran, polymaltotriose, or polystyrene standards for GPC molecular weight distribution determination.</li><li>Price: 4,500 CZK excl. VAT</li></ul><img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Watrex_GPC_separace_polymeru_na_kolone_Watrex_Delta_Gel_47ce92deaa.jpg" alt="Watrex: GPC separation of polymers on Watrex DeltaGel column" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Watrex_GPC_separace_polymeru_na_kolone_Watrex_Delta_Gel_47ce92deaa.jpg 213w," sizes="100vw" width="1385" height="1018"><blockquote><h3>Services – Laboratory</h3>The Watrex Analytical Laboratory will be happy to perform any of our standard analyses, custom analyses, or assist you with method development.We specialize primarily in liquid chromatography techniques and are ready to meet a wide range of requirements—from method development and optimization, through validation and verification of external methods, to training and troubleshooting.Our laboratory also manufactures and packs its own chromatographic columns and guard columns for basic HPLC modes (reversed phase, normal phase, ion chromatography, and ion exclusion chromatography).<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Watrex_Analyticka_laborator_fc8862fba5.jpg" alt="Watrex: Analytical Laboratory" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Watrex_Analyticka_laborator_fc8862fba5.jpg 245w," sizes="100vw" width="1569" height="637"></blockquote>

Determination of sugars and organic acids (Watrex)

Watrex Prague offers the determination of sugars and organic acids in food, beverages, and other samples using ion-exclusive chromatography.

<h4>WI08119 – Determination of Carbohydrates in Natural Materials and Food Products</h4><ul><li>Determination is performed using ion-exclusion chromatography.</li><li>Price: 1,500 CZK excl. VAT</li></ul><h4>WI08118 – Determination of Organic Acids in Natural Materials and Food Products</h4><ul><li>Organic carboxylic acids are determined by ion-exclusion chromatography in natural and food samples.</li><li>Price: 1,300 CZK excl. VAT</li></ul><blockquote>10% discount when submitting 10 or more samples at once.</blockquote><blockquote><h3>Services – Laboratory</h3>The Watrex Analytical Laboratory will be happy to perform any of our standard analyses, custom analyses, or assist you with method development.We specialize primarily in liquid chromatography techniques and are ready to meet a wide range of requirements—from method development and optimization, through validation and verification of external methods, to training and troubleshooting.Our laboratory also manufactures and packs its own chromatographic columns and guard columns for basic HPLC modes (reversed phase, normal phase, ion chromatography, and ion exclusion chromatography).<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Watrex_Analyticka_laborator_fc8862fba5.jpg" alt="Watrex: Analytical Laboratory" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Watrex_Analyticka_laborator_fc8862fba5.jpg 245w," sizes="100vw" width="1569" height="637"></blockquote>

Determination of ions, pH, and water hardness (Watrex)

Watrex Prague offers the determination of cations and anions in water and aqueous extracts, pH determination, and water hardness calculation.

<h4>WI08106 – Determination of Anions in Water</h4><ul><li>Determination of fluoride, chloride, nitrite, bromide, nitrate, phosphate, and sulfate ions in aqueous samples using ion chromatography.</li><li>Price: 1,825 CZK excl. VAT</li></ul><h4>WI081107 – Determination of Cations in Water</h4><ul><li>Determination of sodium, ammonium (NH₄⁺), potassium, calcium, and magnesium ions in aqueous samples using ion chromatography.</li><li>Price: 825 CZK excl. VAT</li></ul><h4>WI081108 – Determination of pH in Aqueous Samples</h4><ul><li>Measurement of pH in aqueous samples using a combined glass electrode. Approximately 20 mL of sample required.</li><li>Price: 115 CZK excl. VAT</li></ul><blockquote>10% discount when submitting 3 or more samples at once</blockquote><h3>Services – Laboratory</h3>The Watrex Analytical Laboratory will be happy to perform any of our standard analyses, custom analyses, or assist you with method development.We specialize primarily in liquid chromatography techniques and are ready to meet a wide range of requirements—from method development and optimization, through validation and verification of external methods, to training and troubleshooting.Our laboratory also manufactures and packs its own chromatographic columns and guard columns for basic HPLC modes (reversed phase, normal phase, ion chromatography, and ion exclusion chromatography).<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Watrex_Analyticka_laborator_fc8862fba5.jpg" alt="Watrex: Analytical Laboratory" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Watrex_Analyticka_laborator_fc8862fba5.jpg 245w," sizes="100vw" width="1569" height="637">

Analytical Services for Building Materials (Watrex Laboratory)

Comprehensive analysis of building materials by ion chromatography and gravimetry – salts, moisture, lime, gypsum, density, and absorption testing by Watrex Laboratory.

<h5>WI08101 – Determination of Water-Soluble Salts in Building Materials</h5><ul><li>Determination of chlorides, nitrates, and sulfates in aqueous extract using ion chromatography. Requires approx. 1 g of a homogeneous sample.</li><li>Price: 600 CZK excl. VAT</li></ul><h5>WI08102 – Determination of Moisture in Building Materials</h5><ul><li>Gravimetric method after drying the sample to constant weight. Moisture content is expressed in mass %. Requires at least 10 g of sample in sealed packaging.</li><li>Price: 300 CZK excl. VAT</li></ul><h5>WI08103 – Determination of Lime Content in Lime Mortars</h5><ul><li>After acid digestion, Ca and Mg content is determined to calculate CaCO₃ and MgCO₃. Sand content determined gravimetrically. Not suitable for cement mortars. Requires approx. 5 g of sample.</li><li>Price: 1,275 CZK excl. VAT</li></ul><h5>WI08104 – Semi-Quantitative Determination of Gypsum in Building Materials</h5><ul><li>Based on solubility differences of gypsum and alkaline sulfates. Requires approx. 11 g of sample.</li><li>Price: 1,100 CZK excl. VAT</li></ul><h5>WI08105 – Determination of Bulk Density of Building Materials</h5><ul><li>Performed using quartz sand displacement. Requires 30–50 cm³ of sample in pieces 2–4 cm.</li><li>Price: 440 CZK excl. VAT</li></ul><h5>WI08109 – Determination of Hygroscopic Moisture in Building Materials</h5><ul><li>Gravimetric method after equilibrium at 100% RH and drying at 105 °C for 2 hours. Requires approx. 10 g of sample.</li><li>Price: 440 CZK excl. VAT</li></ul><h5>WI08114 – Determination of Water Absorption of Building Materials</h5><ul><li>Gravimetric method from weight difference between dried and water-saturated sample. Bulk density determined simultaneously. Requires 30–50 cm³ of sample in pieces 2–4 cm.</li><li>Price: 4,495 CZK excl. VAT</li></ul><blockquote>10% discount when submitting 3 or more samples at once.</blockquote><blockquote><h3>Services – Laboratory</h3>The Watrex Analytical Laboratory will be happy to perform any of our standard analyses, custom analyses, or assist you with method development.We specialize primarily in liquid chromatography techniques and are ready to meet a wide range of requirements—from method development and optimization, through validation and verification of external methods, to training and troubleshooting.Our laboratory also manufactures and packs its own chromatographic columns and guard columns for basic HPLC modes (reversed phase, normal phase, ion chromatography, and ion exclusion chromatography).<img src="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/Watrex_Analyticka_laborator_fc8862fba5.jpg" alt="Watrex: Analytical Laboratory" srcset="https://storage.googleapis.com/labrulez-bucket-strapi-h3hsga3/thumbnail_Watrex_Analyticka_laborator_fc8862fba5.jpg 245w," sizes="100vw" width="1569" height="637"></blockquote>

Watrex application and R&D laboratory

Watrex application and R&D laboratory is providing a range of analyses.

Watrex application and R&amp;D laboratory is providing a range of analyses with special focus in the following fields:<ul><li>Chemical analysis for construction industry</li><li>Environmental analysis</li><li>Sample preparation including online solid-phase extraction protocols</li><li>Development of methods for pharmaceutical analysis</li><li>Characterization of synthetic polymers by GPC</li><li>Column technology and methods for chiral separation</li><li>Parameters evaluation and testing in ion chromatography applications</li></ul><h5>Our ready-to-go tests include:</h5><ul><li>Analysis of carbohydrates</li><li>Characterization of polymers</li><li>Analysis of organic acids</li><li>Construction analysis</li><li>Analysis of ions, pH and water hardness</li></ul>

Products focused on Laboratory analysis from Watrex Prague distributed by WATREX Prague - page 1

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Combining elemental analysis and molecular techniques to characterize Ancient Egyptian mummification balms

Forced degradation analysis of recombinant adeno-associated virus serotype 8 based on analytical anion exchange chromatography coupled to orthogonal characterization

Analysis of characteristic flavor compounds in coffee peels subjected to different thermal processing treatments based on GC–IMS and HS-SPME–GC–MS combined with chemical pattern recognition