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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

 

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1 – 15 of 21,309 results
1

Buffer Solution, pH 10.00, Reagecon™
BIOPHARMA

Certified by an ISO 17025 accredited test method and fully NIST traceable. Reagecon™ Buffer Solution, pH 10.00 is tested at 20°C or 25°C to an accuracy level of ±0.01. This calibration and control buffer is specially formulated to ensure its stability, even after opening the bottle.

EDGE
Boiling Point 100°C
Color Colorless
Solubility Information Fully miscible in water
Traceability to NIST Yes
Physical Form Liquid
Odor Characteristic
Solution Type pH Buffer
Melting Point 0°C
2
Promotions Available

Gibco™ DPBS, no calcium, no magnesium
GREENER_CHOICE

DPBS, no calcium, no magnesium

EDGE
Physical Form Liquid
Chemical Name or Material DPBS
Recommended Storage 15°to 30°C
Concentration 1 X
3
Promotions Available

Thermo Scientific™ Orion™ pH Buffer Bottles

Perform accurate, reproducible pH calibrations with these color-coded buffer bottles.

EDGE
For Use With (Equipment) pH Meter and Electrode
Traceability to NIST Yes
Physical Form Liquid
Chemical Name or Material pH Buffer, bottles
4
Promotions Available

pH Buffers, Twin Neck, Fisherbrand™

Perform accurate pH calibrations with color-coded, twin neck Fisherbrand™ pH Buffer Bottles.

EDGE
For Use With (Application) pH calibration
5
Promotions Available

Buffer Solution pH4.00 (Phthalate), NIST Standard Solution ready to use for pH measurement, Fisher Chemical™

MDL Number: 217672

EDGE
MDL Number 217672
6
Promotions Available

Tris Base (White Crystals or Crystalline Powder/Molecular Biology), Fisher BioReagents™

CAS: 77-86-1 Molecular Formula: C4H11NO3 Molecular Weight (g/mol): 121.136 InChI Key: LENZDBCJOHFCAS-UHFFFAOYSA-N Synonym: Trimethylol Aminomethane,Tris(hydroxymethyl)aminomethane,2-Amino-2-(hydroxymethyl)-1,3-propanediol,THAM,Tris base,Trometamol PubChem CID: 6503 ChEBI: CHEBI:9754 IUPAC Name: 2-amino-2-(hydroxymethyl)propane-1,3-diol SMILES: C(C(CO)(CO)N)O

EDGE
PubChem CID 6503
CAS 77-86-1
Molecular Weight (g/mol) 121.136
ChEBI CHEBI:9754
SMILES C(C(CO)(CO)N)O
Synonym Trimethylol Aminomethane,Tris(hydroxymethyl)aminomethane,2-Amino-2-(hydroxymethyl)-1,3-propanediol,THAM,Tris base,Trometamol
IUPAC Name 2-amino-2-(hydroxymethyl)propane-1,3-diol
InChI Key LENZDBCJOHFCAS-UHFFFAOYSA-N
Molecular Formula C4H11NO3
7
Promotions Available

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
8
Promotions Available

Gibco™ DPBS, calcium, magnesium
GREENER_CHOICE

Dulbecco's phosphate-buffered saline (DPBS) is a balanced salt solution used for a variety of cell culture applications, such as washing cells before dissociation, transporting cells or tissue samples, diluting cells for counting, and preparing reagents.

EDGE
Includes No Sodium Pyruvate
Physical Form Liquid
pH 7.0 to 7.2
Manufacturing Quality cGMP-compliant under the ISO 13485 standard
Chemical Name or Material DPBS
Concentration 1 X
For Use With (Application) Washing Cells Before Dissociation, Transporting Cells or Tissue Samples, Diluting Cells for Counting, and Preparing Reagents
Sterility Sterile-filtered
Solution Type Dulbecco's Phosphate Buffered Saline
Product Line Gibco™
9
Promotions Available

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

EDGE
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
10
Promotions Available

PBS, Phosphate Buffered Saline, 10X Solution, Fisher BioReagents™

Commonly used buffer

EDGE
Physical Form Liquid
Recommended Storage Room temperature
11
Promotions Available

Thermo Scientific™ Orion™ pH Buffer Individual Use Pouches

Ensure fresh, ready-to-use standards for pH calibration with these pH Buffer individual use pouches.

EDGE
Boiling Point 100°C
For Use With (Equipment) pH Meter and Electrode, single-use
Solubility Information Soluble
Traceability to NIST Yes
Packaging Pouch
Physical Form Liquid
Chemical Name or Material pH Buffer, individual use pouches
For Use With (Application) pH calibration
Solution Type Buffer
12
Promotions Available

Traceable™ ISO 17034 (formerly ISO Guide 34) Color-Coded CRM pH Buffers (Certified Reference Material), Fisherbrand™

Performs accurate, reproducible pH calibrations with color-coded bottles. Fisherbrand™ Traceable, Color-Coded buffers are Certified Reference Material pH Buffers.Compatible with all makes of pH instruments and electrodes.

EDGE
For Use With (Equipment) pH Instruments and Electrodes
Physical Form Liquid
Quantity 473 mL
For Use With (Application) Calibration
Solution Type Buffer
13

TE Buffer, Tris-EDTA, 1X Solution, pH 8.0, Molecular Biology, Fisher BioReagents

EDGE
Color Colorless
Physical Form Liquid
Chemical Name or Material Tris-EDTA
Grade Molecular Biology
DNase DNase free
Filtered Through Filtered through a 5-micron filter.
ChemAlert Storage Symbol Gray
Name Note 1X Solution, pH 8.0
CAS 7732-18-5
Protease Protease free
Health Hazard 3 Emergency Overview
May cause eye, skin, and respiratory tract irritation. Avoid contact with skin and eyes. Do not breathe dust. Do not breathe vapors or spray mist. Wash off immediately with soap and plenty of water removing all contaminated clothes and shoes. Obtain medical attention. Rinse immediately with plenty of water, also under the eyelids, for at least 15 minutes. Obtain medical attention. Remove from exposure, lie down. Move to fresh air. If breathing is difficult, give oxygen. If not breathing, give artificial respiration. If not breathing, give artificial respiration. Obtain medical attention.

NFPA

Health:1
Flammability:0
Instability:0
Health Hazard 2 CAUTION!
pH 7.4 to 8.1
Synonym TE
Recommended Storage RT
14
Promotions Available

Thermo Scientific™ Eutech Handheld Meters Calibration Solution, 1413μS/cm KCl

Periodic calibration with accurate standards is recommended for meters

EDGE
15

HEPES (Fine White Crystals/Molecular Biology), Fisher BioReagents™

Commonly used buffering agent | CAS: 7365-45-9 | C8H18N2O4S | 238.30 g/mol

EDGE
Molecular Weight (g/mol) 238.30
ChEBI CHEBI:42334
Color White
Chemical Name or Material HEPES
Grade Molecular Biology
SMILES OCCN1CCN(CCS(O)(=O)=O)CC1
Identification Pass Test
DNase DNase free
Merck Index 15, 4689
InChI Key JKMHFZQWWAIEOD-UHFFFAOYSA-N
ChemAlert Storage Symbol Gray
Assay Percent Range ≥99 %
PubChem CID 23831
Absorbance 0.01 max. (0.1M solution) at 280nm
Percent Purity ≥99%
CAS 7365-45-9
Protease Protease free
Health Hazard 3 Emergency Overview
Causes eye, skin, and respiratory tract irritation. Use personal protective equipment. Ensure adequate ventilation. Wash off immediately with plenty of water for at least 15 minutes. Obtain medical attention. Rinse immediately with plenty of water, also under the eyelids, for at least 15 minutes. Obtain medical attention. Move to fresh air. If breathing is difficult, give oxygen. Obtain medical attention. Do not induce vomiting. Obtain medical attention. Obtain medical attention. .

NFPA

Health:2
Flammability:1
Instability:1
MDL Number MFCD00006158
Health Hazard 2 WARNING!
Solubility Information Soluble in water
pH 5.0 to 6.5
Purity Grade Notes DNase-, RNase- and Protease-Free
Recommended Storage RT
Molecular Formula C8H18N2O4S