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693 matches found for food

HPLC Analysis of Artificial Food Colorants in Orange Soft Drink on Chromolith® HighResolution RP-18 endcapped

column Chromolith HighResolution RP-18, 10 cm x 4.6 mm I.D., 2 µm particles (1.52022.0001) mobile phase [A] 20mM ammonium acetate pH 6.8 in water; [B] methanol gradient 5 to 50% B in 6 min; to 100% B in 4 min; held at 100% B for 1 min; to 5% B in 0.01 min flow rate 1 mL/min pressure 1526 psi (106 ba...

HPLC Analysis of Artificial Food Colorants Cochineal Red A and Azorubine in Yoghurt on Chromolith® FastGradient RP-18 endcapped

column Chromolith FastGradient RP-18, 5 cm x 2.0 mm I.D particles (1.52007.0001) column temp. 25 °C mobile phase [A] acetonitrile; [B] 20 mM ammonium acetate, pH 4.7 in water gradient 2.5 to 50% A in 6 min; held at 50% A for 2 min flow rate 0.4 mL/min pressure 899-856 psi (62-59 bar) injection 1 µL ...

HPLC Analysis of Artificial Food Colorants on Chromolith® HighResolution RP-18 endcapped, UV 628 nm

column Chromolith HighResolution RP-18, 10 cm x 4.6 mm I.D., 2 µm particles (1.52022.0001) column temp. 30 °C mobile phase [A] 20mM ammonium acetate pH 6.8 in water; [B] methanol gradient 5 to 50% B in 6 min; to 100% B in 4 min; held at 100% B for 1 min; to 5% B in 0.01 min flow rate 1 mL/min pressu...

HPLC Analysis of Synthetic Food Dyes on Ascentis® Express C18

column Ascentis Express C18, 10 cm x 2.1 mm I.D., 2.7 µm particles (53823-U) column temp. 40 °C mobile phase [A] 100 mM ammonium phosphate monobasic, pH 7.0 with ammonium hydroxide; [B] water; [C] acetonitrile gradient 10% A constant; 85 to 25% B, 5 to 65% C in 6 min; 25% B, 65% C held for 5 min flo...

HPLC Analysis of Artificial Food Colorants on Chromolith® HighResolution RP-18 endcapped, UV 428 nm

column Chromolith High Resolution RP-18, 10 cm x 4.6 mm, 2 µm particles (1.52022.0001) column temp. 30 °C mobile phase [A] 20mM ammonium acetate pH 6.8 in water; [B] methanol gradient 5 to 50% B in 6 min; to 100% B in 4 min; held at 100% B for 1 min; to 5% B in 0.01 min flow rate 1 mL/min pressure 1...

HPLC Analysis of Artificial Food Colorants in Dried Plums on Chromolith® HighResolution RP-18 endcapped

column Chromolith HighResolution RP-18, 10 cm x 4.6 mm I.D., 2 mu particles (1.52022.0001) column temp. 30 °C mobile phase [A] 20mM ammonium acetate pH 6.8 in water; [B] methanol gradient 5 to 50% B in 6 min; to 100% B in 4 min; held at 100% B for 1 min; to 5% B in 0.01 min flow rate 1 mL/min pressu...

HPLC Analysis of Artificial Food Colorants on Chromolith® HighResolution RP-18 endcapped, UV 510 nm

column Chromolith HighResolution RP-18, 10 cm x 4.6 mm I.D., 2 µm particles (1.52022.0001) column temp. 30 °C mobile phase [A] 20mM ammonium acetate pH 6.8 in water; [B] methanol gradient 5 to 50% B in 6 min; to 100% B in 4 min; held at 100% B for 1 min; to 5% B in 0.01 min flow rate 1 mL/min pressu...

Analytical Method: Selenium in water (Food and Beverages)

Instruments and Reagents: Cat.No. 109748 Spectroquant® Photometer NOVA 30 or Cat.No. 109751 Spectroquant® Photometer NOVA 60 Cat.No. 114944 Rectangular cells 50 mm Cat.No. 100264 Formic acid 98-100% for analysis 3,3‘-Diaminobenzidine tetrahydrochloride (CAS 868272-85-9), e. g. Sigma-Aldrich Art. 327...

LC/MS Analysis of Artificial Food Colorants Cochineal Red A and Azorubine in Yoghurt on Chromolith® FastGradient RP-18 endcapped

column Chromolith FastGradient RP-18, 5 cm x 2.0 mm I.D, 2 µm particles (1.52007.0001) column temp. 25 °C mobile phase [A] acetonitrile; [B] 20 mM ammonium acetate, pH 4.7 in water gradient 2.5 to 50% A in 6 min; held at 50% A for 2 min flow rate 0.4 mL/min pressure 856-899 psi (59-62 bar) injection...

Analytical Method: Nickel in mineral water (Food and Beverages)

Instruments and Reagents: Cat.No. 173016 Spectroquant® VIS Spectrophotometer Prove 100 or Cat.No. 173017 Spectroquant® UV/VIS Spectrophotometer Prove 300 or Cat.No. 173018 Spectroquant® UV/VIS Spectrophotometer Prove 600 or Cat.No. 109748 Spectroquant® Photometer NOVA 30 or Cat.No. 109751 Spectroqua...

Analytical Method: Nitrogen (total) according to Kjeldahl (Food and Beverages)

Instruments and Reagents: Cat.No. 173016 Spectroquant® VIS Spectrophotometer Prove 100 or Cat.No. 173017 Spectroquant® UV/VIS Spectrophotometer Prove 300 or Cat.No. 173018 Spectroquant® UV/VIS Spectrophotometer Prove 600 or Cat.No. 109748 Spectroquant® Photometer NOVA 30 or Cat.No. 109751 Spectroqua...

Analytical Method: Manganese (total) in mineral water (Food and Beverages)

Instruments and Reagents: Cat.No. 173016 Spectroquant® VIS Spectrophotometer Prove 100 or Cat.No. 173017 Spectroquant® UV/VIS Spectrophotometer Prove 300 or Cat.No. 173018 Spectroquant® UV/VIS Spectrophotometer Prove 600 or Cat.No. 109748 Spectroquant® Photometer NOVA 30 or Cat.No. 109751 Spectroqua...

Analytical Method: Calcium in tomato (Food and Beverages)

Instruments and Reagents: Cat.No. 173016 Spectroquant® VIS Spectrophotometer Prove 100 or Cat.No. 173017 Spectroquant® UV/VIS Spectrophotometer Prove 300 or Cat.No. 173018 Spectroquant® UV/VIS Spectrophotometer Prove 600 or Cat.No. 109748 Spectroquant® Photometer NOVA 30 or Cat.No. 109751 Spectroqua...

Determination of Fipronil and Fipronil Sulfone in Food Using Purospher STAR RP-18 Endcapped Column and UV Detection

Fipronil is normally used as a broad spectrum insecticide to treat dogs and cats for fleas and to combat red lice in poultry. Fipronil sulfone is a degradation product of fipronil, and is more toxic to organisms than the parent compound. Fipronil is a phenylpyrazole pesticide and its use with food p...

US FDA LIB 4423: GC Analysis of Melamine and Related Compounds in Dog Food (Spiked) on SLB®-5ms

column SLB-5ms, 30 m x 0.25 mm I.D., 0.25 µm (28471-U) oven 115 °C (3 min), 10 °C/min to 325 °C (6 min) carrier gas helium, 1 mL/min., constant sample TMS derivatives of melamine and related compounds (extract of dog food spiked with each analyte at 10 µg/g, with I.S. added at 1000 ng/mL, in pyridin...

Determination of Stevioside and Rebaudioside A in Stevia leaves, beverages and food additives using HPTLC-MS

High Performance Thin Layer Chromatography coupled with Mass Spectrometry (HPTLC–MS) is a very useful analytical technique where samples often can be analyzed with a minimum of sample preparation. This is exemplified here through the determination of stevioside and rebaudioside in beverages and food...

US FDA LIB 4423: GC Analysis of Melamine and Related Compounds in Dog Food on SLB®-5ms

column SLB-5ms, 30 m x 0.25 mm I.D., 0.25 µm (28471-U) oven 115 °C (3 min), 10 °C/min to 325 °C (6 min) carrier gas helium, 1 mL/min, constant sample TMS derivatives of melamine and related compounds (extract of dog food, with I.S. added at 1000 ng/mL, in pyridine:sylon BFT) injection 1 µLsplitless ...

GC/MS/MS Analysis of Bisphenol A (BPA) in Pureed Carrot Baby Food on the SLB-PAHms GC Column After SPME Using an Overcoated SPME Fiber

Sample Prep Method SPME fiber overcoated PDMS/DVB, 23 gauge extraction immersion, 50 min, 50 °C, 250 rpm, vial penetration 34 mm desorption process 3 min, 260°C other sample prep information Sample was incubated prior to extraction for 10 min at 50°C, 400 rpm mixing. Fiber was washed post-extraction...

GC Analysis of Pesticides in Spinach on Equity®-1 after SPE using Supelclean™ ENVI-Carb-II/PSA

sample preparation SPE (Solid Phase Extraction) sample/matrix 10 g of fresh spinach spiked at 0.2 ppm each pesticide SPE tube/cartridge Supelclean ENVI-Carb-II/PSA, 500mg/300mg/6mL (55119-U) condition 5 mL acetonitrile:toluene (3:1, v/v) sample addition 1 mL concentrated sample extract elution 20 mL...

HPLC Analysis of Acrylamide in Fried Potato Chips on Discovery® HS F5 after SPE using Discovery® DSC-MCAX and DSC-18

sample preparation SPE (Solid Phase Extraction) sample/matrix Finely grind 2.0 g of potato chips, place in 20 mL vial and add 10 mL water. Mix using vortex until mixture forms a thick paste. (Place sample in centrifuge tubes and centrifuge at 16.1 rcf for 5 min. Extract aqueous portion of sample lea...

Selecting a GC Column for Specific Industries/Applications

We know that only the most accurate analytical products will do. That’s why we offer the Supelco portfolio of analytical GC columns, providing you the accuracy, precision and consistency you need. Gas chromatography, first established in the 1950′s, is a mature analytical technique with many establi...

GC Analysis of FAMEs in Popcorn Oil on SP™-2560 (75 m x 0.18 mm I.D., 0.14 μm) after SPE Fractionation using Discovery® Ag-Ion, Fast GC Analysis

sample preparation SPE (Solid Phase Extraction) sample/matrix 1 g of popcorn oil FAME's in Hexane SPE tube/cartridge Discovery Ag-Ion, 750 mg/6 mL (54225-U) condition 4 mL acetone and 4 mL hexane sample addition 1 mL of the hexane FAME extract elution 6 mL hexane:acetone (96:4, v/v) followed by 4 mL...

Determination of Lactose in dairy products using TLC-MS

Today food intolerances play a big role in our society. For example a lot of people are lactose intolerant, usually some more in Asian countries than in Europe or North America. So far, analysis of lactose in foodstuff, especially in dairy products is important for food industries. Foodstuff with a ...

MC-Media Pad – Validation Summary

Related Products • Food Microbiological Control Related Resources • Application Note: Convenient media performance comparison • Color-coded MC-Media Pads • MC-Media Pad Conversion Table (PDF) The MC-Media Pad is a convenient method for rapid routine testing of raw materials and in-process testing of...

ASTM Color Measurement for Prove

Related Products • Spectroquant® Prove Spectrophotometers • Spectroquant® Test Kits • Water, Food & Environmental Analytics Catalog Related Categories • Application Notes for Photometry & Reflectometry (Color of Petroleum Products by the Automatic Tristimulus Method) Materials and reagents: Reagents...

Analytical Method: Sensitive Measurement of Iron in Water

Related Products • Spectroquant® Prove Spectrophotometers • Spectroquant® Test Kits • Water, Food & Environmental Analytics Catalog Related Categories • Application Notes for Photometry & Reflectometry Materials and reagents: Reagents Cat. No. 114761 – Spectroquant® Iron Test Cat. No. 101262 – Water...

Saybolt Color Measurement for Prove

Related Products • Spectroquant® Prove Spectrophotometers • Spectroquant® Test Kits • Water, Food & Environmental Analytics Catalog Related Categories • Application Notes for Photometry & Reflectometry (Color of Petroleum Products by the Automatic Tristimulus Method) Materials and reagents: Reagents...

Gardener Color Measurement for Prove

Related Products • Spectroquant® Prove Spectrophotometers • Spectroquant® Test Kits • Spectroquant® Silicate Test Kits • Water, Food & Environmental Analytics Catalog Related Categories • Application Notes for Photometry & Reflectometry (Color of Pine Chemicals and Related Products - Instrumental De...

Analytical Method: Ultrasensitive determination of silicate in process and boiler water

Related Products • Spectroquant® Prove Spectrophotometers • Spectroquant® Test Kits • Spectroquant® Silicate Test Kits • Water, Food & Environmental Analytics Catalog Related Categories • Application Notes for Photometry & Reflectometry Materials and reagents: Reagents Cat. No. 101813 – Spectroquant...

GC Analysis of Organophosphorus Pesticides (OP-Pest) in Cabbage, Onion, and Mushrooms on SLB-5ms after SPE using Supelclean™ ENVI-Carb™ II/PSA

sample preparation SPE (Solid Phase Extraction) sample/matrix 10 g homogenized food sample (green onions, apples, Napa cabbage, button mushrooms) SPE tube/cartridge Supelclean ENVI-Carb II/PSA SPE Tube (54067-U) condition 5 mL acetone:toluene (65:35) sample addition 1 mL sample extract elution 10 mL...