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278 matches found for 1% acetic acid

Determination of Water Content in Ethylenediamine, 1,2-Diaminoethane Using Karl Fischer Titration

Amines Amines Weakly alkaline amines pose no problems in the water determination after Karl Fischer and can be titrated according to standard methods. For strongly alkaline amines the buffer capacity of the Karl Fischer solution is not sufficient. A shift of pH into the alkaline range leads to a sid...

HPLC Analysis of Protein Tryptic Digest on Ascentis® RP-Amide

column Ascentis RP-Amide, 25 cm x 2.1 mm I.D., 5 µm particles (565306-U) column temp. ambient mobile phase [A] 50:50 (v/v) 50 mM formic acid, pH 3.0 with acetic acid:water; [B] 50:50 (v/v) 50 mM formic acid, pH 3.0 with acetic acid:acetonitrile gradient 10 to 50% B in 80 min flow rate 0.2 mL/min sam...

HPLC Analysis of Beverage Additives in Diet Cola on Ascentis® Express C18

column Ascentis Express C18, 10 cm x 3.0 mm I.D., 2.7 µm particles (53814-U) column temp. 40 °C mobile phase [A] 20 mM ammonium acetate, pH 4.7 with acetic acid: [B] acetonitrile; (90:10, A:B) flow rate 0.6 mL/min sample 100 - 500 µg/mL in 95:5, buffer: acetonitrile injection 1 µL detector UV, 214 n...

HPLC Analysis of Anxiolytic Drugs on SUPELCOSIL™ LC-8

column SUPELCOSIL LC-8, 15 cm x 4.6 mm I.D., 5 µm particles (58220-U) column temp. 30 °C mobile phase methanol:acetonitrile:0.005 M KH2PO4 and 0.1 M ammonium acetate buffer (pH 6.0 with glacial acetic acid),26.5:16.5:57 (v/v/v) flow rate 2 mL/min injection 10 µL detector UV, 245 nm Categories Analyt...

HPLC Analysis of Beverage Additives in Diet Cola on Ascentis® Express RP-Amide

column Ascentis Express RP-Amide, 10 cm x 3.0 mm I.D., 2.7 µm particles (53918-U) column temp. 40 °C mobile phase [A] 20 mM ammonium acetate, pH 4.7 with acetic acid; [B] acetonitrile; (92:8, A:B) flow rate 0.6 mL/min sample 500 - 1000 µg/mL in 95:5, buffer: acetonitrile injection 1 µL detector UV, ...

HPLC Analysis of trans-1-Amino-2-Indanol Enantiomers on LARIHC™ CF6-P

column LARIHC CF6-P, 25 cm x 4.6 mm I.D., 5 µm particles (AZYP Part No.L1001, available from Supelco/Sigma-Aldrich as a custom item.) column temp. 20 °C mobile phase [A] methanol; [B] acetonitrile; [C] acetic acid; [D] triethylamine, (70:30:0.3.0.2, A:B:C:D) flow rate 1 mL/min sample Trans-1-Amino-2...

HPLC Analysis of Peptide Mix, Complex on Ascentis® C18

column Ascentis C18, 25 cm x 2.1 mm I.D., 5 µm particles (581305-U) column temp. ambient mobile phase [A] 50:50 (v/v) 50 mM formic acid, pH 3.0 with acetic acid:water; [B] 50:50 (v/v) 50 mM formic acid, pH 3.0 with acetic acid:acetonitrile gradient 10 to 50% B in 80 min flow rate 0.2 mL/min sample t...

HPLC Analysis of Capsacinoids in a Capsicum annuum L. extract.on Ascentis® Express C18

column Ascentis Express C18, 15 cm x 4.6 mm I.D., 2.7 µm (53829-U) mobile phase [A] 0.075% acetic acid, pH 3; [B] 0.075% acetic acid in acetonitrile; (40:60; A:B) flow rate 1 mL/min injection 5 µL detector UV, 280 nm Analysis Note Two grams of Capsicum annuum L. pericarp, placenta, and seeds were se...

TLC Analysis Of Paracetamol in Different Formulations on HPTLC Silica Gel 60 F254 MS-grade

plate: 1.00934 HPTLC Silica gel 60 F254 MS-grade 20 cm x10 cm (1.00934.0001) eluent: [A] aceton; [B] toluene; (1:1, A:B) containing 0.1% Acetic acid migration distance: 5 cm chamber: normal chamber without chamber saturation detector: UV, 254 nm suitability application for TLC Featured Industry Life...

HPLC Analysis of Bile Acids on Ascentis® Express C18

column Ascentis Express C18, 5 cm x 4.6 mm I.D., 2.7 µm particles (53826-U) column temp. 35 °C mobile phase [A] 10 mM ammonium acetate, pH 4 (adjusted with acetic acid); [B] acetonitrile; (80:20, A:B) gradient 20 to 100% B in 10 min flow rate 1.0 mL/min sample 10 µg/mL injection 5 µL detector ESI(-)...

UHPLC Analysis of Aflatoxins on Titan™ C18 with TFA Derivatization and Fluoresence Detection

sample preparation 200 µL of standard solution of aflatoxins was mixed with 300 µL of derivatization solution (7:1:2 water:acetic acid:trifluoroacetic acid). (The mixture was kept at 65 °C for 25 minutes, then cooled down to room temperature. 550 µL of water was added.) column Titan C18, 10 cm x 2.1...

Determination of Water Content in tert-Butylamine Using Karl Fischer Titration

Amines Amines Weakly alkaline amines pose no problems in the water determination after Karl Fischer and can be titrated according to standard methods. For strongly alkaline amines the buffer capacity of the Karl Fischer solution is not sufficient. A shift of pH into the alkaline range leads to a sid...

LC/MS Analysis of Potassium Sorbate on SeQuant® ZIC-HILIC

column SeQuant ZIC-cHILIC, PEEK, 150 x 4.6 mm, 5 μm, 200Ã… (1.50455.0001) column temp. 30 °C mobile phase [A] acetonitrile; [B] 10 mM ammonium acetate, adjusted with acetic acid to pH 6.0; (70:930 (v/v), A:B) [[A] acetonitrile; [B] 10 mM ammonium acetate, adjusted with acetic acid to pH 6.0; (70:930...

HPLC Analysis of Nonvolatile Pesticides in Water on SUPELCOSIL™ LC-18-DB after SPE using Supelclean™ ENVI-Carb™

sample preparation SPE (Solid Phase Extraction) sample/matrix water spiked with pesticides at 10-50 µg/L SPE tube/cartridge Supelclean ENVI-Carb, 250 mg/3 mL (57088) condition 5 mL methylene chloride:methanol (80:20); 1 mL methanol; 10 mL 2% acetic acid in water (keep bed moist until sample addition...

HPLC Analysis of Albuterol Tablets - Assay on Chromolith® HighResolution RP-18 endcapped 150 x 4.6mm

sample preparation 120 μg/mL of Albuterol Sulfate RS prepared as follows. Transfer USP Albuterol Sulfate RS to a suitable volumetric flask, and add a volumne of Solution A corresponding to 60% of the flask volume. Sonicate for 5 minutes, and dilute with Methanol to volume. column Chromolith® HighRes...

HPLC Analysis of α-Pyrrolidinopropiophenone (PPP) Enantiomers on Astec® CHIROBIOTIC® V2

column Astec CHIROBIOTIC V2, 15 cm x 4.6 mm I.D., 5 µm particles (15023AST) column temp. 20 °C mobile phase [A] methanol; [B] water; [C] acetic acid; [D] ammonium hydroxide; (95:5:0.1:0.02, A:B:C:D) flow rate 1 mL/min pressure 1100 psi (70 bar) sample 100 µg/mL in methanol injection 5 µL detector UV...

HPLC Analysis of Fluroquinolone Antibiotics on Discovery® C18

column Discovery C18, 15 cm x 4.6 mm I.D., 5 µm particles (504955) column temp. 35 °C mobile phase [A] water (10 mM ammonium acetate, pH 3.0 with acetic acid); [B] acetonitrile; (85:15, A:B) flow rate 1.0 mL/min sample 50 µg/mL each in mobile phase injection 10 µL detector UV, 254 nm Categories Anal...

GC Analysis of Volatiles in PVC Pipe on SPB®-HAP after Collection/Desorption using Carbotrap® 300 Tube

sample/matrix (1g PVC pipe Schedule 40) dry purge 60 min thermal desorption tube Carbotrap® 300 Glass-Fritted Thermal Desorption Tube, 1/4 in O.D. x 3.5 in L (30141-U) desorption process 350 °C with 10 min hold column SPB®-HAP, 60 m x 0.32 mm I.D., 4 µm (25020-U) oven 40 °C (3 min), 12 °C/min to 200...

USP HPLC Analysis of Ampicillin Sodium on Ascentis® Express C18

column Ascentis Express C18, 10 cm x 4.6 mm I.D., 5 mum particles (50536-U) column temp. 30 °C mobile phase [A:B:C:D] [A] acetonitrile, [B]water, [C] 1M Potassium phosphate monobasic in water, [D] 1N acetic acid in water (80:909:10:1) flow rate 1.0 mL/min sample 1 mg/mL in mobile phase injection 10 ...

GC Analysis of Scotch Whiskey on a Packed Column (6.6% Carbowax® 20M on 80/120 °Carbopack B AW)

column 2 m x 2 mm I.D. glass packing 6.6% Carbowax 20M on 80/120 °Carbopack B AW oven 70 °C, 4 °C/min. to 150 °C carrier gas nitrogen, 20 mL/min sample Scotch Whiskey injection 1 µL detector FID Categories Analytical Chromatography, GC Applications, Food & Beverage Analysis, Beverage Testing, Alcoho...

HPLC Analysis of Caffeine and Metabolites on Ascentis® RP-Amide

column Ascentis RP-Amide, 15 cm x 4.6 mm I.D., 5 µm particles (565324-U) column temp. 30 °C mobile phase [A] 0.1% ammonium acetate in water, pH 4.5 with acetic acid; [B] acetonitrile gradient 2 to 8% B in 3 min; to 20% B in 9 min; held for 2 min; to 2% B in 0.1 min; held for 0.9 min flow rate 1.0 mL...

HPLC Analysis of Polyphenoles in Coffee on Chromolith® Performance 2 x 100-3mm

sample preparation 6g of coffee powder with 200ml of boiling water in a coffe-extractor.The extract was injected directly into the HPLC-System. column Chromolith Performance 100 x 3 mm mPurospher STAR RP-18 endcapped 150 x 4.6 mm 1.51455.000 1 (1.52001.0001) column temp. ambient mobile phase [A] ace...

Determination of Water Content in 2-Aminoethanol, Ethanolamine Using Karl Fischer Titration

Alcohols, Amines Alcohols Water determination after Karl Fischer poses no problems for most alcohols. Alcohols are easily soluble in the common Karl Fischer working media. Only alcohols with very long chains require the addition of solubilisers. Side reactions are not to be expected. Suitable method...

HPLC Analysis of Acetic Acid on SeQuant ZIC-HILIC

column SeQuant ZIC-HILIC, PEEK, 150 x 4.6 mm, 5 µm, 200 Ã… (1.50455.0001) column temp. ambient mobile phase [A] acetonitrile; [B] ammonium acetate; (80:20, A:B) flow rate 1.0 mL/min injection 50 µL detector 210 nm Categories Analytical Chromatography, Organic Acids Featured Industry Chemicals and In...

HPLC Analysis of Heterocyclic Amines (HCAs) on Discovery® HS F5

column Discovery HS F5, 15 cm x 4.6 mm I.D., 5 µm particles (567516-U) column temp. 35 °C mobile phase [A] water (10 mM ammonium acetate, pH 4.0 with acetic acid); [B] methanol (v/v); (15:85, A:B) flow rate 1.0 mL/min sample 50 µg/mL each in mobile phase injection 5 µg/mL detector UV, 254 nm Categor...

LC/MS Analysis of Sodium Cyclamate on SeQuant® ZIC-HILIC

column SeQuant® ZIC-cHILIC, PEEK, 150 x 2.1 mm, 3 μm, 100 Ã… (1.50658.0001) column temp. ambient mobile phase [A] acetonitrile; [B] 100 mM ammonium acetate adjusted to pH 4.5 by glacial acetic acid; (75:25, A:B) flow rate 0.2 mL/min pressure 566 psi 39 Bar sample 1mg/mL Sodium Cyclamate in diluent s...

LC/MS Analysis of Amphetamine Enantiomers on Astec CHIROBIOTIC® V2

column Astec CHIROBIOTIC V2, 15 cm x 4.6 mm I.D., 5 µm particles (15023AST) column temp. 20 °C mobile phase [A] methanol; [B] water; [C] acetic acid; [D] ammonium hydroxide; (95:5:0.1:0.02, A:B:C:D flow rate 1 mL/min pressure 1220 psi (84 bar) sample 50 ng/mL each enantiomer in methanol injection 2 ...

UHPLC Analysis of Tretinoin and Related Compounds on Ascentis® Express C18

column Ascentis Express C18 5 cm x 2.1 mm, 2.0 µm particle size (50811-U) column temp. 50 °C mobile phase (A) water with 5% acetic acid; (B) methanol with 5% acetic acid; (70:30, A:B) flow rate 0.5 mL/min pressure 5240 psi (361 bar) sample Tretinoin and related 20-50 µg/mL in mobile phase injection ...

HPLC Analysis of BPA (Bisphenol A) at 1 ng/mL in Milk on Ascentis® Express C18 after Solid Phase Extraction using SupelMIP® SPE - Bisphenol A

sample preparation (reconstitute residue in 500 µL 40:60 acetonitrile;water) sample preparation SPE (Solid Phase Extraction) SPE tube/cartridge SupelMIP SPE - Bisphenol A, 100 mg/6 mL (54277-U) condition 5 mL methanol 2% acetic acid, 5 mL acetonitrile, 5 mL water (1 drop/sec) sample addition 5 mL li...

Determination of Water Content in Aniline Using Karl Fischer Titration

Amines Amines Weakly alkaline amines pose no problems in the water determination after Karl Fischer and can be titrated according to standard methods. For strongly alkaline amines the buffer capacity of the Karl Fischer solution is not sufficient. A shift of pH into the alkaline range leads to a sid...