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110 matches found for cosmetic

HPLC Analysis of Cosmetic Preservatives on Ascentis® Express C18 (1.2 mL/min)

column Ascentis Express C18, 7.5 cm x 3 mm I.D., 2.7 µm particles (53812-U) column temp. 35 °C mobile phase [A] water; [B] methanol; (55:45, A:B) flow rate 1.2 mL/min sample methyl-, benzylparaben, 50 mg/L; ethylparaben, 30 mg/L; propyl-, butylparaben, 100 mg/L; 2-phenoxyethanol, 1.5 g/L; 1-phenoxy-...

HPLC Analysis of Cosmetic Preservatives on Ascentis® Express RP-Amide at Elevated Temperature (0.6 mL/min)

column Ascentis Express RP-Amide, 10 cm x 3 mm I.D., 2.7 µm particles (53918-U) column temp. 50 °C mobile phase [A] water; [B] methanol; (60:40, A:B) flow rate 0.6 mL/min sample methyl-, benzylparaben, 50 mg/L; ethylparaben, 30 mg/L; propyl-, butylparaben, 100 mg/L; 2-phenoxyethanol, 1.5 g/L; 1-phen...

TLC Analysis of a cosmetic active on HPTLC Silica gel 60 F254 (analyte set 2)

sample preparation 1 g cosmetic samples was stirred with 10 ml 1-Propanol at room temperature and filtered with a 0.45 μm syringe filter. Application with CAMAG ATS4, 6 mm bandwise. detector 254, 366 nm and white light (Derivatisation: Anisaldehyde- sulfuric acid) eluent [A] petroleum benzine; [B] 1...

HPLC Analysis of Cosmetic Preservatives on Ascentis® Express C18 (0.6 mL/min)

column Ascentis Express C18, 7.5 cm x 3 mm I.D., 2.7 µm particles (53812-U) column temp. 35 °C mobile phase [A] water; [B] methanol; (55:45, A:B) flow rate 0.6 mL/min sample methyl-, benzylparaben, 50 mg/L; ethylparaben, 30 mg/L; propyl-, butylparaben, 100 mg/L; 2-phenoxyethanol, 1.5 g/L; 1-phenoxy-...

HPLC Analysis of Cosmetic Preservatives on Ascentis® Express RP-Amide at Elevated Flow and Temperature (1.2 mL/min)

column Ascentis Express RP-Amide, 10 cm x 3 mm I.D., 2.7 µm particles (53918-U) column temp. 50 °C mobile phase [A] water; [B] methanol; (60:40, A:B) flow rate 1.2 mL/min sample methyl-, benzylparaben, 50 mg/L; ethylparaben, 30 mg/L; propyl-, butylparaben, 100 mg/L; 2-phenoxyethanol, 1.5 g/L; 1-phen...

HPLC Analysis of Cosmetic Preservatives on Ascentis® Express RP-Amide

column Ascentis Express RP-Amide, 10 cm x 3 mm I.D., 2.7 µm particles (53918-U) column temp. 50 °C mobile phase [A] water; [B] methanol; (60:40, A:B) flow rate 0.6 mL/min pressure 2900 psi (200 bar) sample methyl-, benzylparaben (50 mg/L), ethylparaben (30 mg/L), propyl-, butylparaben (100 mg/L), 2-...

TLC Analysis Of a Cosmetic Active on HPTLC Silica Gel 60 F254 (analyte set 1)

detector UV, 254 nm (Identification by coupling the TLC – MS Interface (CAMAG) with Microsaic 3500 MiD mass spectrometer (+)-ESI mode. Eluent: Acetonitrile / Water (95/5) + 0.1% TFA) eluent [A] petroleum benzine; [B] acetone; (8:2, A:B) chamber normal chamber without chamber saturation migration dis...

TLC Analysis Of Vitamin C Derivates From Cosmetic Formulation on HPTLC Silica gel 60 F254s

sample preparation 1 g cosmetic formulation (1% and 2% active) was stirred in 10 ml THF for 15 min and filtered over a 0.45 μm syringe filter. Application by CAMAG ATS4 6 mm bandwise. sample 0.150 μL detector UV, 254 nm (Identification by coupling the TLC – MS Interface (CAMAG) with the Advion expre...

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...

Sample prep-free determination of Arginine and Taurine in shampoo by using TLC-MS

The application of modern thin-layer chromatography (TLC) offers a lot of advantages especially in the field of cosmetics. The ingredients can usually be separated directly from complex matrices and many samples can be analysed quickly and simultaneously under exactly the same conditions. Below the ...

Determination of Water Content in Shaving foam Using Karl Fischer Titration

Cosmetics Cosmetics Cosmetics on an aqueous and alcoholic basis can be titrated without problems according to the Karl Fischer (KF) method. Due to the often high water concentration of the emulsions small samples are required. The accuracy of analysis is determined through exact sampling, weighing a...

Determination of Water Content in Shower gel Using Karl Fischer Titration

Cosmetics Cosmetics Cosmetics on an aqueous and alcoholic basis can be titrated without problems according to the Karl Fischer (KF) method. Due to the often high water concentration of the emulsions small samples are required. The accuracy of analysis is determined through exact sampling, weighing a...

Determination of Water Content in Toothpaste Using Karl Fischer Titration

Cosmetics Cosmetics Cosmetics on an aqueous and alcoholic basis can be titrated without problems according to the Karl Fischer (KF) method. Due to the often high water concentration of the emulsions small samples are required. The accuracy of analysis is determined through exact sampling, weighing a...

HPLC Analysis of Antibacterials on Chromolith® High Resolution RP-18e

column Chromolith® High Resolution RP-18 endcapped, 100 x 4.6 mm (1.52022.0001) column temp. ambient mobile phase [A] methanol; [B] phosphat buffer 50mM pH=3,0; (55:45, A:B) flow rate 2 mL/min sample Penicilin 10,61mg/100ml, Ampicilin 20,63mg/100ml injection 1 μL detector 210 nm cell: 11 μL Featured...

HPLC Analysis of Benzoic Acid and Related Compounds on Ascentis® RP-Amide

column Ascentis RP-Amide, 15 cm x 4.6 mm I.D., 5 µm particles (565324-U) column temp. 35 °C mobile phase [A] water with 0.1% TFA; [B] acetonitrile; (70:30, A:B) flow rate 1 mL/min injection 10 µL detector UV, 220 nm Categories Analytical Chromatography, Preservatives Featured Industry Cosmetics, Per...

HPLC Analysis of Antioxidants on SUPELCOSIL™ LC-18

column SUPELCOSIL LC-18, 15 cm x 4.6 mm I.D., 5 µm particles (58230-U) mobile phase [A] 5% acetic acid in deionized water; [B] acetonitrile:methanol (1:1) 70% A/30% B to 100% B, linear gradient over 10 min, hold 10min flow rate 2 mL/min injection 10µL, 20 µg/mL each antioxidant detector UV, 280 nm C...

GC Analysis of Methoxyphenols on SLB®-IL76i

column SLB®-IL76i, 30 m x 0.25 mm I.D., 0.20 μm (29869-U) oven 180 °C (1 min), 20 °C/min to 240 °C (4 min) carrier gas helium, 30 cm/sec injection 1 μL, 100:1 split liner 3.5 mm I.D., split/splitless, wool packed design inj. temp. 250 °C detector MSD, full scan, m/z 50-500 MSD interface 270 °C Analy...

HPLC Analysis of Mandelic Acid Enantiomers on Astec® CHIROBIOTIC® TAG

column CHIROBIOTIC TAG, 25 cm x 4.6 mm I.D., 5 µm particles (14024AST) column temp. 25 °C mobile phase 0.1 wt% ammonium formate in methanol flow rate 1 mL/min sample 2 mg/mL in methanol injection 5 µL detector UV, 254 nm Categories Analytical Chromatography, Chiral Applications, Chemicals and Indust...

GC Analysis of Phthalate Esters in Perfume on SLB®-5ms (20 m x 0.18 mm I.D., 0.18 μm), Fast GC Analysis

column SLB-5ms, 20 m x 0.18 mm I.D., 0.18 µm (28564-U) oven 60 °C (1 min), 10 °C/min to 330 °C (10 min) carrier gas helium, 0.6 mL/min, constant sample cologne sample spiked at 100 µg/mL with various phthalate esters liner 4 mm ID focus liner with taper inj. temp. 250 °C Analysis Note Phthalate este...

GCxGC Analysis of Allergens in Perfume Sample 1 on SLB®-5ms x SLB®-35ms, Non-Polar to Polar Strategy

column (1D) SLB-5ms, 20 m x 0.18 mm I.D., 0.18 µm (28564-U) column (2D) SLB-35ms, 5 m x 0.25 mm I.D., 0.25 µm (29804-U) oven (modulator) stainless steel accumulation loop measuring 20 cm x 0.71 mm O.D. x 0.51 mm I.D.; modulation period 5.4 sec (accumulation period 4.9 sec; injection period 0.5 sec) ...

Determination of Water Content in Sunblock cream (water resistant) Using Karl Fischer Titration

Cosmetics Cosmetics Cosmetics on an aqueous and alcoholic basis can be titrated without problems according to the Karl Fischer (KF) method. Due to the often high water concentration of the emulsions small samples are required. The accuracy of analysis is determined through exact sampling, weighing a...

HPLC Analysis of Chlorhexidine and Robenidine on Ascentis® Phenyl

column Ascentis Phenyl 15 cm x 4.6 mm I.D., 5 µm particles (581616-U) column temp. 35 °C mobile phase [A] water; [B] acetonitrile; [C] 500 mM ammonium formate, pH 3.0 with formic acid gradient 10% C constant; 65% A, 25% B to 0% A, 90% B in 7 min; held for 2 min; to 65% A, 25% B in 0.5 min flow rate ...

HPLC Analysis of Benzoic Acid and Sorbic Acid on Ascentis® Express RP-Amide ("Green" Mobile Phase Conditions)

column Ascentis Express RP-Amide, 5 cm x 3 mm I.D., 2.7 µm particles (53916-U) column temp. 55 °C mobile phase [A] 10 mM ammonium phosphate monobasic, pH 2.5 with phosphoric acid; [B] ethanol; (75:25, A:B) flow rate 0.4 mL/min pressure 138 bar (2000 psi) column, 248 bar (3600 psi) total sample 50 µg...

Determination of Water Content in Fusel oils Using Karl Fischer Titration

Cosmetics, Foodstuffs Cosmetics Cosmetics on an aqueous and alcoholic basis can be titrated without problems according to the Karl Fischer (KF) method. Due to the often high water concentration of the emulsions small samples are required. The accuracy of analysis is determined through exact sampling...

Determination of Water Content in Extracts, Aqueous drops Using Karl Fischer Titration

Cosmetics, Pharmaceuticals Cosmetics Cosmetics on an aqueous and alcoholic basis can be titrated without problems according to the Karl Fischer (KF) method. Due to the often high water concentration of the emulsions small samples are required. The accuracy of analysis is determined through exact sam...

GCxGC Analysis of Allergens in Perfume Sample 2 on SLB®-5ms x SLB®-35ms, Non-Polar to Polar Strategy

column (2D)SLB-35ms, 5 m x 0.25 mm I.D., 0.25 µm (29804-U) column (1D) SLB-5ms, 20 m x 0.18 mm I.D., 0.18 µm (28564-U) oven (modulator) stainless steel accumulation loop measuring 20 cm x 0.71 mm O.D. x 0.51 mm I.D.; modulation period: 5.4 sec (accumulation period 4.9 sec, injection period 0.5 sec) ...

Determination of Water Content in Hair spray Using Karl Fischer Titration

Cosmetics Cosmetics Cosmetics on an aqueous and alcoholic basis can be titrated without problems according to the Karl Fischer (KF) method. Due to the often high water concentration of the emulsions small samples are required. The accuracy of analysis is determined through exact sampling, weighing a...

TLC and HPTLC Plates with Concentrating Zone

Quick and Easy Application of Large Sample Volumes Our concentrating zone plates are based on the different properties of two silica adsorbents: an inert, large-pore concentrating adsorbent where the samples are applied; and a selective separation layer. Independent of the shape, size or position of...

Determination of Water Content in Cinnamon leaf oil Using Karl Fischer Titration

Cosmetics, Foodstuffs Cosmetics Cosmetics on an aqueous and alcoholic basis can be titrated without problems according to the Karl Fischer (KF) method. Due to the often high water concentration of the emulsions small samples are required. The accuracy of analysis is determined through exact sampling...

LC/MS Analysis of Anti-infectives on Ascentis® Express Biphenyl

column Ascentis Express Biphenyl, 10 cm x 3.0 mm, 2.7 µm particles (64066-U) column temp. 35 °C gradient 10 mM ammonium formate (70:30 water:acetonitrile) SW pH 4.00 flow rate 0.6 mL/min pressure 997 psi (68.7 bar) sample 300ng/mL in 85:15, water:methanol injection 5 µL detector MS, ESI+, XIC Featur...