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


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Supplier: Shimadzu Diagnostics Europe
Description: EC Blue is a simple, quick and reliable test method for the qualitative and quantitative determination of coliforms and <i>E.coli</i> in water. Add water to be tested into a pre-prepared, sterile, non-fluorescent EC Blue container. Then incubate the mixture at 35 ±2 °C. The medium does not require further preparation work. This means that the test can be carried out anywhere without much effort. Traditional incubating methods require about three days for the detection of coliforms or <i>E.coli</i>. EC Blue, on the other hand, already provides reliable test results after 24 hours. The detection is based on a colour reaction and is thus easy to interpret: if coliform bacteria are present, the water turns blue due to the cleavage of the chromogenic substrate X-Gal. In the event of faecal contamination by <i>E.coli</i>, these bacteria can only be conclusively detected under UV light (reaction with a fluorescent dye). Suspended matter, cloudy, yellowish or chlorinated water samples do not generally interfere with detection. EC Blue has a shelf life of up to two years at room temperature if protected from light.

Catalog Number: (PROONIST-1643F)
Supplier: LGC Standards PROMOCHEM
Description: This reference standards are intended to use in the determination of trace elements in fresh water. The solution contains nitric acid at a volume fraction of approximately 2%, equivalent to an amount of substance concentration (molarity) of approximately 0,32 mol/l and also it simulates the elemental composition of fresh water.
UOM: 1 * 250 mL


Supplier: MACHEREY-NAGEL
Description: Photometric test kits for the determination of manganese in water samples.
Supplier: Q BIOANALYTIC
Description: Food safety experts like the German DGHM recommend to test warm water fish for Vibrio parahaemolyticus. With this Real-Time PCR test you have a very versatile method for food testing, which can gives you results within 24 hrs. The test was developed and validated within the German Network for Vibrio Research “VibrioNet” with many scientific institutions involved. It can be applied for food and sea water samples. In case of positive results you may be interested to determine whether or not the present strain has the ability to produce toxins (tdh/trh). You can use our Real-Time PCR Test for toxicity gene of Vibrio cholera for this purpose VWR catalogue number: QBIAQB-RTI-50. You can use this test in combination with an appropriate pre- enrichment in alkaline peptone-water or you can confirm bacterial colonies on agar plates.

Supplier: Q BIOANALYTIC
Description: Food safety experts like the German DGHM recommend to test warm water fish for vibrio cholerae . With this Real-Time PCR test you have a very versatile method for food testing, which can gives you results within 24 hrs. The test was developed and validated within the German Network for Vibrio Research 'VibrioNet' with many scientific institutions involved. It can be applied for food and sea water samples. In case of positive results you may be interested to determine whether or not the present strain has the ability to produce toxins. You can use our Real-Time PCR Test for toxicity gene of Vibrio cholera for this purpose VWR catalogue number: QBIAQB-RTI-19. You can use this test in combination with an appropriate pre- enrichment in alkaline peptone-water or you can confirm bacterial colonies on agar plates.

Supplier: Hach
Description: These mixed standards are ready to use with no dilutions required. It include standards for determination of copper, iron and manganese.
Catalog Number: (MANA91802)
Supplier: MACHEREY-NAGEL
Description: <p>Photometric test kit for the determination of aluminium in water samples.</p>
UOM: 1 * 1 KIT

Catalog Number: (MANA91895)
Supplier: MACHEREY-NAGEL
Description: Photometric test kit for the determination of zinc in water samples.
UOM: 1 * 1 KIT

Catalog Number: (71285-3)
Supplier: Merck Millipore (Novagen)
Description: BCA Protein Assay is a simple and reliable protein quantification method. It can be used to determine protein concentration in the range of 20-2000 µg/ml in either a standard assay or microassay configuration.
UOM: 1 * 1 KIT


Catalog Number: (MANA91888)
Supplier: MACHEREY-NAGEL
Description: <p>Photometric test kit for the determination of sulphide in water samples.</p>
UOM: 1 * 1 KIT

Catalog Number: (MANA91851)
Supplier: MACHEREY-NAGEL
Description: <p>Photometric test kit for the determination of cobalt in water samples.</p>
UOM: 1 * 1 KIT

Supplier: MACHEREY-NAGEL
Description: Photometric test kits for the determination of iron in water samples.
Catalog Number: (MANA918163)
Supplier: MACHEREY-NAGEL
Description: <p>Photometric test kit for the determination of chlorine dioxide in water samples.</p>
UOM: 1 * 1 KIT

Catalog Number: (HACH2182115)
Supplier: Hach
Description: Lauryl tryptose broth with MUG provides a selective medium which is used for enumeration of <i>E.coli</i> and other coliform bacteria in water using the Most Probable Number (MPN) method.
UOM: 1 * 15 items


Supplier: Hach
Description: USEPA accepted for reporting wastewater analysis (digestion required). Procedure is equivalent to Standard Method 3500-Ni D for wastewater.

Catalog Number: (634-8130)
Supplier: MACHEREY-NAGEL
Description: Photometric test kit for the determination of silica in water samples.
UOM: 1 * 1 KIT

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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
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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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