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Buffers and Standards

Buffers and Standards

Hydrogen ion buffers comprising a mixture of a weak acid and its conjugate base or vice-versa and used to stabilize pH; also diluents, washing solutions, and standard-value solutions used for a broad array of scientific calibration purposes.

The buffers used to calibrate pH meters may be certified and/or traceable to the National Institute of Standards and Technology (NIST). These buffers may also be color-coded for easy identification:

  • Red: pH 4.0
  • Yellow: pH 7.0
  • Blue: pH 10.0

 

Chromatography Standards (4,040)
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1 – 15 of 9,316 results
1

Gibco™ HEPES, 1M Buffer Solution
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HEPES, 1M Buffer Solution

EDGE
Absorbance UV light
Packaging 1 Each
Physical Form Liquid
pH 7.2 to 7.5
Certificate of Analysis FDA, ISO 13485 standards
Chemical Name or Material HEPES buffer
Concentration 1 M
For Use With (Application) Mammalian cell culture
3

Buffer solution pH 7, Phosphate buffer, traceable to NIST, ready to use, Thermo Scientific Chemicals

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Name Note Phosphate buffer, traceable to NIST, ready to use
CAS 7647-14-5
MDL Number MFCD03097944
Solubility Information Solubility in water: miscible.
Chemical Name or Material Buffer solution pH 7
Density 1.0000g/mL
Specific Gravity 1
4

pH Buffer Sachets, METTLER TOLEDO™
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5

Buffer solution pH 4, Citrate buffer, Thermo Scientific Chemicals

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Name Note Phthalate buffer
CAS 7732-18-5
MDL Number MFCD00130806
Color Colorless
Traceability to NIST Traceable to NIST
Packaging Plastic bottle
Physical Form Liquid
pH 3.98 to 4.02 (20°C)
Chemical Name or Material Buffer solution pH 4
Molecular Formula C8H5KO4
Formula Weight 204.23
6

Technical pH Buffer Solutions, METTLER TOLEDO™
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Provides a reliable all-around pH buffer. Mettler Toledo™ Technical pH Buffer Solution are specified to two decimal places and are traceable to NIST standards. Color-coded solution comes in a handy 250mL plastic bottle with no-fuss labels.

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EDGE
For Use With (Equipment) pH Electrode
Traceability to NIST Yes
Quantity 250 mL
Grade Technical
For Use With (Application) pH measurement, electrode calibration
9

pH 4.01 Calibration Buffer Solution Sachets, Hanna Instruments™

EDGE
10

Technical Buffer Solution pH 4.01, Mettler Toledo™
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11

Technical Buffer Solution pH 7.00, Mettler Toledo™
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12

Buffer Colour Coded Solution pH10.00 (Borate) Blue, NIST Standard Solution ready to use for pH measurement, Fisher Chemical™

CAS: 10043-35-3 Molecular Formula: BH3O3 Molecular Weight (g/mol): 61.83 InChI Key: KGBXLFKZBHKPEV-UHFFFAOYSA-N IUPAC Name: boric acid SMILES: OB(O)O

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CAS 10043-35-3
Molecular Weight (g/mol) 61.83
SMILES OB(O)O
IUPAC Name boric acid
InChI Key KGBXLFKZBHKPEV-UHFFFAOYSA-N
Molecular Formula BH3O3
13

Calibration Buffer Solutions, Hanna Instruments™

EDGE
14

Buffer Solution pH7.00 (Phosphate), NIST Standard Solution ready to use for pH measurement, Fisher Chemical™

MDL Number: 217672

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MDL Number 217672
15

Technical Buffer pH 9.21 Sachets, Mettler Toledo™
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