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 (4,032)

Spectroscopy Standards (2,561)

Matrix Blanks and Standardization Solutions (1,745)

Life Science Buffers (1,309)

Electrochemistry Buffers (1,059)

General Chemistry Solutions (725)

Environmental Testing Standards (454)

Electrochemistry Standards (356)

Viscosity Standards (260)

Karl Fischer Buffers and Reagents (255)

Isotope Standards (86)

Osmolality Standards (15)

Kjeldahl Buffers and Reagents (13)

Quality Control and Proficiency Samples (12)

Matrix Modifiers (4)

1 – 15 of 9,511 results

Thermo Scientific™ Orion™ pH Buffer Bottles

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

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Specifications

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

Gibco™ PBS, pH 7.2

PBS, pH 7.2

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Specifications

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

Gibco™ PBS (10X), pH 7.4

PBS (10X), pH 7.4

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Specifications

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

Buffer Tablets, pH 7 (Phosphate), for pH measurement, to make-up volume of 100ml, Fisher Chemical™

Buffer Tablets, pH 7 (Phosphate), for pH measurement, to make-up volume of 100ml, Fisher Chemical, White, Packaging: Glass Jar, Quantity: 50 tablets, MDL Number: 81857, Physical Form: Solid

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Gibco™ DPBS, no calcium, no magnesium

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, diluting cells for counting, and preparing reagents.

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Specifications

Form	Liquid
Product Type	DPBS
Classification	Animal Origin-Free
pH	7.0 to 7.3
Manufacturing Quality	cGMP-compliant under the ISO 13485 standard
For Use With (Application)	Mammalian Cell Culture
Sterility	Sterile-filtered
Phenol Red Indicator	No Phenol Red
Osmolality	270 - 300 mOsm/kg
Solution Type	Dulbecco's Phosphate Buffered Saline

Tris-HCl, 1M Solution, pH 8.0, Molecular Biology Grade, Ultrapure, Thermo Scientific Chemicals

CAS: 1185-53-1 Molecular Formula: C4H12ClNO3 Molecular Weight (g/mol): 157.594 InChI Key: QKNYBSVHEMOAJP-UHFFFAOYSA-N PubChem CID: 93573 IUPAC Name: 2-amino-2-(hydroxymethyl)propane-1,3-diol;hydrochloride SMILES: C(C(CO)(CO)N)O.Cl

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Specifications

PubChem CID	93573
CAS	1185-53-1
Molecular Weight (g/mol)	157.594
SMILES	C(C(CO)(CO)N)O.Cl
IUPAC Name	2-amino-2-(hydroxymethyl)propane-1,3-diol;hydrochloride
InChI Key	QKNYBSVHEMOAJP-UHFFFAOYSA-N
Molecular Formula	C4H12ClNO3

pH 4.01 Calibration Buffer Solution Sachets, Hanna Instruments™

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Technical Buffer for pH DKD Certified pH 7.00, METTLER TOLEDO™

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

Commonly used buffering agent.

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Specifications

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

Thermo Scientific™ Orion™ pH Buffer Individual Use Pouches

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

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Specifications

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

Phosphate buffer solution, pH 6.8 EU Pharmacopoeia, Fisher Chemical™

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Lead solution for ICP/MS 10mg/L HNO₃ matrix, Fisher chemical™

CAS: 7697-37-2 Molecular Formula: HNO3 Molecular Weight (g/mol): 63.01 MDL Number: MFCD00011349 InChI Key: GRYLNZFGIOXLOG-UHFFFAOYSA-N PubChem CID: 944 ChEBI: CHEBI:48107 IUPAC Name: nitric acid SMILES: O[N+]([O-])=O

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Specifications

PubChem CID	944
CAS	7697-37-2
Molecular Weight (g/mol)	63.01
ChEBI	CHEBI:48107
MDL Number	MFCD00011349
SMILES	O[N+]([O-])=O
IUPAC Name	nitric acid
InChI Key	GRYLNZFGIOXLOG-UHFFFAOYSA-N
Molecular Formula	HNO3

Arsenic solution for ICP/MS 10mg/L HNO₃ matrix, Fisher chemical™

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Specifications

PubChem CID	944
CAS	7697-37-2
Molecular Weight (g/mol)	63.01
ChEBI	CHEBI:48107
MDL Number	MFCD00011349
SMILES	O[N+]([O-])=O
IUPAC Name	nitric acid
InChI Key	GRYLNZFGIOXLOG-UHFFFAOYSA-N
Molecular Formula	HNO3

Arsenic for AAS 0.02mg/L matrix HNO₃ diluted, Fisher Chemical™

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pH Buffer Sachets, METTLER TOLEDO™

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Buffers and Standards

Buffers and Standards