17202
Phosphate buffer
NutriSelect® Plus, APHA, final pH 7.2±0.2 (25 °C), powder, pkg of 500 g
Synonym(s):
Buffered Phosphate diluent, PBS, Phosphate Buffered Saline
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About This Item
UNSPSC Code:
41171610
NACRES:
NA.85
Agency
APHA
according to GB 4789.10-2016
according to GB 4789.15-2016
Quality Level
description
APHA, pH 7.2
sterility
non-sterile
form
powder
composition
monopotassium phosphate, 26.22 g/L
sodium carbonate, 7.78 g/L
packaging
pkg of 500 g
manufacturer/tradename
NutriSelect® Plus
final pH
7.2±0.2 (25 °C)
application(s)
agriculture
environmental
food and beverages
microbiology
sample preparation
veterinary
water monitoring
General description
Phosphate Buffer, pH 7.2, is prepared according to APHA guidelines and is primarily used for diluting test samples. It is specified for microbiological methods involving the dilution of water, dairy products, and food samples. Additionally, Phosphate Buffer can be used with the addition of magnesium chloride, as recommended by APHA and FDA. This medium is also referred to as Butterfield’s Buffered Phosphate Diluent when used without magnesium chloride. Phosphate Buffer is preferred over unbuffered water as it helps standardize the pH variations commonly observed in distilled water from different sources.
Application
Phosphate Buffer is a microbiological culture medium designed for the preparation of dilutions and blanks for the examination of water, dairy products, foods, eating utensils, and other specimens in food and beverage industries.
Features and Benefits
NutriSelect® Plus are powdered culture media offering
- Quality control with growth promotion test according to industry standards
- Quality assurance acc. to ISO 9001
- Cost-efficient powdered media
Preparation Note
Dissolve 34 g in 1 litre distilled water. Dispense and sterilize by autoclaving at 121°C for 15 minutes. The pH, after autoclaving and cooling to room temperature should be 7.2 ± 0.2.
Other Notes
We offer two media types: the superior granulated GranuCult® and the cost-efficient powdered NutriSelect® culture media, depending on your needs.
The designations basic, plus, or prime are added to indicate the quality control level, from basic quality control to standard QC plus to prime for full regulatory compliance.
The designations basic, plus, or prime are added to indicate the quality control level, from basic quality control to standard QC plus to prime for full regulatory compliance.
Legal Information
GRANUCULT is a registered trademark of Merck KGaA, Darmstadt, Germany
NutriSelect is a registered trademark of Merck KGaA, Darmstadt, Germany
Signal Word
Warning
Hazard Statements
Precautionary Statements
Hazard Classifications
Eye Irrit. 2
Storage Class Code
11 - Combustible Solids
WGK
WGK 1
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Personal Protective Equipment
dust mask type N95 (US), Eyeshields, Gloves
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