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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 (4,044)
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Karl Fischer Buffers and Reagents (252)
Osmolality Standards (17)
Kjeldahl Buffers and Reagents (15)
Quality Control and Proficiency Samples (10)
Isotope Standards (3)
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1 – 15 of 9,476 results
1

Conductivity Standards for METTLER TOLEDO Conductivity Probes, METTLER TOLEDO™
GREENER_CHOICE

Recommended NIST traceable solutions for calibrating or verifying METTLER TOLEDO conductivity electrodes.

EDGE
Type Conductivity Standard
For Use With (Equipment) Conductivity Electrodes
Recommended Storage Ambient
Solution Type Conductivity Standard
2

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

MDL Number: 217672

Promotions are available
EDGE
MDL Number 217672
3

Technical pH Buffer Solutions, METTLER TOLEDO™
GREENER_CHOICE

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.

Promotions are available
EDGE
For Use With (Equipment) pH Electrode
Traceability to NIST Yes
Quantity 250 mL
Grade Technical
For Use With (Application) pH measurement, electrode calibration
4

pH 4.01 Calibration Buffer Solution Sachets, Hanna Instruments™

EDGE
5

pH Buffer Sachets, METTLER TOLEDO™
GREENER_CHOICE

Promotions are available
EDGE
6

Calibration Buffer Solutions, Hanna Instruments™

EDGE
7

TPL 10 Trace Model Buffer Solution pH 10.1, WTW™

EDGE
8

pH 7.01 Calibration Buffer Sachets, Hanna Instruments™

EDGE
10

Gibco™ PBS, pH 7.2
GREENER_CHOICE

PBS, pH 7.2

EDGE
Dilution 1 X
Content And Storage 15°to 30°C
Additive No Sodium Pyruvate
Form Liquid
Product Type Phosphate Buffered Saline (PBS)
pH 7.2
Shelf Life 36 Month(s)
For Use With (Application) Mammalian Cell Culture
Osmolality 280 to 320 mOsm/kg
11

Iodine Solution 0.05M (0.1N), NIST Standard Solution Ready To Use, for Volumetric Analysis, meets analytical specification of Ph.Eur., BP, Fisher Chemical™

CAS: 7553-56-2 Molecular Formula: I2 Molecular Weight (g/mol): 253.81 MDL Number: MFCD00011355 MFCD00164163 InChI Key: PNDPGZBMCMUPRI-UHFFFAOYSA-N Synonym: iodine,diiodine,iodine crystals,iodine sublimed,tincture iodine,vistarin,eranol,iodio,iodine solution,iode PubChem CID: 807 ChEBI: CHEBI:17606 IUPAC Name: molecular iodine SMILES: II

EDGE
PubChem CID 807
CAS 7553-56-2
Molecular Weight (g/mol) 253.81
ChEBI CHEBI:17606
MDL Number MFCD00011355 MFCD00164163
SMILES II
Synonym iodine,diiodine,iodine crystals,iodine sublimed,tincture iodine,vistarin,eranol,iodio,iodine solution,iode
IUPAC Name molecular iodine
InChI Key PNDPGZBMCMUPRI-UHFFFAOYSA-N
Molecular Formula I2
14

Gibco™ DPBS, calcium, magnesium
GREENER_CHOICE

DPBS, calcium, magnesium

EDGE
Regulatory Status For in-vitro diagnostic use
Dilution 1 X
Content And Storage 2° to 8°C
Additive No Sodium Pyruvate
Form Liquid
Product Type DPBS
pH 7 to 7.2
Shelf Life 36 Month(s)
For Use With (Application) Mammalian Cell Culture
15

Gibco™ PBS (10X), pH 7.4
GREENER_CHOICE

PBS (10X), pH 7.4

EDGE
Regulatory Status For in-vitro diagnostic use
Dilution 10 X
Content And Storage 15°to 30°C
Form Liquid
Product Type Phosphate Buffered Saline (PBS)
Capacity 500 mL
pH 7.3 to 7.5
Shelf Life 36 Month(s)
For Use With (Application) Mammalian Cell Culture
Osmolality 2800 to 3100 mOsm/kg