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You Searched For: Water+Determination+(by+Karl+Fischer+method)+Standards


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Product Image-BINZ123025

General purpose qualitative filter papers

Supplier: Ahlstrom-Munksjö
Description: Ahlstrom-Munksjö’s qualitative grades of filter paper are recommended for use in analytical methods which determine or identify particulate constituents of a mixture irrespective of the amount present. Qualitative filter papers are often used in routine separation work that still requires high purity and consistent performance. These filter papers covers a wide range of laboratory applications, as liquids clarification, qualitative analytical separations for precipitates and buffers filtration, and are also used for soil analysis and in food and beverage testing. Standard qualitative filter papers are suitable for quadrant folded or gravity flow applications.

Image Unavailable-90903-100ML-F

Schaeffer and Fulton Spore Stain Solution A, Sigma-Aldrich®

Catalog Number: (90903-100ML-F)
Supplier: SIGMA ALDRICH MICROSCOPY
Description: In Schaeffer-Fulton`s method, a primary stain-malachite green is forced into the spore by steaming the bacterial emulsion. Malachite green is water soluble and has a low affinity for cellular material, so vegetative cells may be decolorized with water. Ve
UOM: 1 * 100 mL
Image Unavailable-1.11148.0001

Visual colour kits, sulphite, MQuant®, Supelco®

Catalog Number: (1.11148.0001)
Supplier: Merck
Description: MQuant® titrimetric and colorimetric methods.
UOM: 1 * 200 Tests

MSDS Certificates


Image Unavailable-69870-10G

Morin hydrate 1-2 mol/mol water for the determination of Al, Be, Zn, Ga, In, Sc, for microscopy, Sigma-Aldrich®

Supplier: SIGMA ALDRICH MICROSCOPY
Description: Morin hydrate is a yellowish pigment and a fluorescent indicator. It is used for the fluorimetric determination of several metals, mostly aluminum. Morin has been utilised in fluorescent microscopy as a fluorescent nuclear stain and as an application to detect aluminium in the brain by demonstrating metal salts.

Certificates

Image Unavailable-TDF100A-1KT

Total dietary fiber assay kit, Supelco®

Catalog Number: (TDF100A-1KT)
Supplier: Merck
Description: This assay determines the total dietary fiber content of food using a combination of enzymatic and gravimetric methods. Samples of dried, fat-free foods are gelatinised with heat stable α-amylase and then enzymatically digested with protease and amyloglucosidase to remove the protein and starch present in the sample.
UOM: 1 * 1 KIT
Product Image-401122ZA

VWR®, Fluids and culture media for sterility testing of pharmaceutical products

Supplier: VWR Chemicals
Description: Culture media for sterility tests, diluents for the homogenisation of samples for the microbiological examination and rinsing fluids for membrane filtration methods.

Image Unavailable-I5763-1G

Indophenol, Sigma-Aldrich®

Supplier: SIGMA ALDRICH MICROSCOPY
Description: Indophenol is used in hair dyes, redox materials, lubricants, liquid crystal displays, biosensor and fuel cells. It is toxic to fishes and is implicated in environmental pollution. Indophenol method is common for the determination of ammonia. The reaction gives a blue product, which is measured spectrophotometrically.

Product Image-160232E

VWR®, Total Hardness Indicator, Tablets for Hardness of Water Determinations

Catalog Number: (160232E)
Supplier: VWR Chemicals
Description: Indicator tablets for determination of water hardness by titration with EDTA.
UOM: 1 * 100 Tablet

MSDS Certificates


Image Unavailable-F9252-100ML

Folin-Ciocalteu's reagent 1,9 - 2,1 N for analysis of phenols, suitable for determination of total protein by Lowry method, Sigma-Aldrich®

Supplier: SIGMA ALDRICH MICROSCOPY
Description: Folin & Ciocalteu's phenol reagent is most commonly used in the Lowry method for determining protein concentration. It has also been used for the quantification of total phenolics. In this method, protein is pretreated with copper(II) in a modified biuret reagent (alkaline copper solution
stabilized with sodium potassium tartrate). Addition of the phenol reagent generates chromogens that give increasing absorbance between 550-750nm. Normally, absorbance at the peak (750 nm) or shoulder (660 nm) are used to quantitate protein concentrations between 1 - 100 mg/ml while absorbance at 550 nm is used to quantitate higher protein concentrations.

Product Image-30029.290

EDTA disodium salt 0.0178 mol/l (N/28) in water, AVS TITRINORM for hardness of water determinations, for hardness of water determinations

Catalog Number: (30029.290)
Supplier: VWR Chemicals
Description: 1 ml = 1°dH/100 ml H₂O
UOM: 1 * 1 L

MSDS Certificates


Image Unavailable-23182-10X1ML-F

(+)-1-(9-Fluorenyl)ethyl chloroformate solution ≥18 mM in acetone, LiChropur™ for chiral derivatisation, Supelco®

Supplier: Merck
Description: (+)-1-(9-Fluorenyl)ethyl chloroformate [(+)-FLEC] is a chiral derivatizing reagent. It helps in separating enantiomers of α-amino acids, as well as helps in determining its optical purity using HPLC method.

Product Image-191892H

Solution for anionic surfactant determination (formerly known as Dimidium bromide-disulphine blue indicator stock solution)

Catalog Number: (191892H)
Supplier: VWR Chemicals
Description: For use in the two-phase method for anionic surfactants.
UOM: 1 * 100 mL

MSDS Certificates


Product Image-E350-01

Carbon disulphide ≥99.9% (by GC, corrected for water content), ULTRA RESI-ANALYZED® for spectroscopy, J.T.Baker®

Catalog Number: (E350-01)
Supplier: Avantor
Description: Suitable for NIOSH analytical methods 1003, 1500, and 1501 for hydrocarbon analysis and spectroscopy.
UOM: 1 * 500 mL

MSDS Certificates


Image Unavailable-HACHLCK432

Test kits, photometric, Surfactants, anionic, LCK cuvette tests

Catalog Number: (HACHLCK432)
Supplier: Hach
Description: The standard anionic surfactant method has several drawbacks:
*Multiple handling steps are time consuming and complicated.
*Large volumes of extraction solvents create a safety and environmental risk.
*The combination of lengthy handling time, glassware maintenance, and solvent disposal adds up to significant costs per test. A standardised cuvette-based extraction and photometric measurement system overcomes all these disadvantages to provide accurate, reproducible results.
UOM: 1 * 25 Tests

Certificates


Product Image-85534.1000

VWR® Kjeldahl Tablets

Supplier: VWR Chemicals
Description: Kjeldahl tablets are catalysts that promote the digestion step of the Kjeldahl method for nitrogen determination.

MSDS Certificates

Image Unavailable-1.13366.0500

Deuterium oxide (99.9% D), MagniSolv™ for NMR spectroscopy , pH 7 (H₂O, 20 °C), Sigma-Aldrich®

Supplier: Merck
Description: MagniSolv™ deuterated solvents provide:
• Reliable results in the NMR-spectra by excellent chemical purity and highest isotopic enrichment.
• Reliable deuteration degrees.
• Low residual water content.
• Determination of water content in two ways.

MSDS

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Stock for this item is limited, but may be available in a warehouse close to you. Please make sure that you are logged in to the site so that available stock can be displayed. If the call is still displayed and you need assistance, please call us on +353 1 88 22222.
Stock for this item is limited, but may be available in a warehouse close to you. Please make sure that you are logged in to the site so that available stock can be displayed. If the call is still displayed and you need assistance, please call us on +353 1 88 22222
This product is marked as restricted and can only be purchased by approved Shipping Accounts. If you need further assistance, email VWR Regulatory Department at eurega_services@eu.vwr.com
-Additional Documentation May be needed to purchase this item. A VWR representative will contact you if needed.
This product has been blocked by your organisation. Please contact your purchasing department for more information.
The original product is no longer available. The replacement shown is available.
Product(s) marked with this symbol are discontinued - sold till end of stock. Alternatives may be available by searching with the VWR Catalog Number listed above. If you need further assistance, please call VWR Customer Service on +353 1 8822222.
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