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 (22,754)

Spectroscopy Standards (5,983)

General Chemistry Solutions (5,246)

Matrix Blanks and Standardization Solutions (4,367)

Life Science Buffers (3,916)

Electrochemistry Buffers (2,316)

Environmental Testing Standards (1,935)

Electrochemistry Standards (1,221)

Karl Fischer Buffers and Reagents (478)

Isotope Standards (300)

Viscosity Standards (257)

Quality Control and Proficiency Samples (205)

Kjeldahl Buffers and Reagents (108)

Gel Filtration Standards (60)

Matrix Modifiers (29)

Osmolality Standards (12)

Smoke Point Reference (9)

Polarimetric Standards (4)

Narrow Results

special offers

New Lab Start-Up (116)
Offers (49)

special interests

Available on GSA/VA Contract (381)
SureTRACE (78)
Fast Shipping (669)
Greener Choice (61)
Production Products (37)
Science Education (219)
Small and Specialty Supplier (8,921)

Grade

AAS (56)
AAS Standard (11)
ACS (59)
ACS Reagent (26)
ACS/ASTM E 200/AOAC/EPA (7)
ACS/ASTM E 200/AOAC/USP Volumetric (5)
APHA/EPA (5)

Show all

Molecular Weight (g/mol)

0.00 (1)
10.81 (14)
100.09 (33)
100.117 g/mol (1)
100.12 (1)
100.121 (1)
100.15 (1)

Show all

Quantity

0.1 mL (1)
0.1 mol (1)
0.5 L (1)
0.5 mL (15)
0.5 mol (1)
1 Box (1)
1 Ea. (4)

Show all

Percent Purity

≥14% (BF3) (1)
≥30% (RT) (1)
≥30% (titration) (1)
≥35% (RT) (1)
≥40% (3)
≥49% (2)
≥50% (3)

Show all

pH

≥12 to ≤14 (6)
>11 (1)
>11.5 (3)
>12 (44)
>13 (104)
>8 (1)
<0.5 (3)

Show all

Solvent or Matrix

#2 Diesel Fuel (12)
10% HCl (19)
10% HCl/1% HNO₃ (1)
10% HNO3 (13)
15% HCl (3)
15% HNO₃ (2)
2% HCl (29)

Show all

Concentration

≈0.000027 M (3)
≈0.0035 M (3)
≥30% (1)
≤0.1% in nitric acid (1)
≤2.5% KCl (T) (8)
0.00017 M (3)
0.001 M KCl (1)

Show all

Physical Form

Aqueous Solution (26)
Capsule (11)
Chemvelope (1)
Clear Liquid (1)
Clear Liquid at 20°C (2)
Crystalline (17)
Crystalline Powder (143)

Show all

Technique

AA (472)
Acidimetry (3)
Calibrating the absorbance of spectrophotometers (1)
Calibration (7)
Calibration and Matrix Spikes (1)
Calibration and Verification (16)
Calibration and Verification of Kinematic and Dynamic Viscosity Test (15)

Show all

Solution Type

Antigen Retrieval Reagent (1)
Aqueous (2)
Buffer (433)
Buffer, Storage (2)
Calibration (8)
Cleaning (1)
Colored pH Buffer (35)

Show all

31 – 45 of 43,630 results

Invitrogen™ Novex™ Tris-Glycine SDS Sample Buffer (2X)

Use with Novex Tris-Glycine Gels

Pricing & Availability

HEPES Buffer, 1M Solution, pH 7.3 (Molecular Biology), Fisher BioReagents™

Commonly used buffering agent

Pricing & Availability
Specifications

Color	Undesignated
Physical Form	Liquid
Chemical Name or Material	HEPES Buffer
Grade	Molecular Biology
Identification	Pass Test
DNase	DNase free
Merck Index	15, 4689
Concentration	0.95 to 1.05 M
ChemAlert Storage Symbol	Gray
Absorbance	≤0.01(0.1M solution) at 260nm,0.004 max. (0.1M solution) at 280nm
Name Note	1M Solution, pH 7.3
CAS	7732-18-5
Protease	Protease free
pH	7.2 to 7.5
Synonym	N-(2-Hydroxyethyl)piperazine-N«-2-ethanesulfonic Acid
Purity Grade Notes	DNase-, RNase- and Protease-Free
Recommended Storage	RT
Molecular Formula	C₈H₁₈N₂O₄S
Formula Weight	238.197

Sodium thiosulfate, 0.01N Standardized Solution

CAS: 7772-98-7 Molecular Formula: Na2O3S2 Molecular Weight (g/mol): 158.10 MDL Number: MFCD00003499 InChI Key: AKHNMLFCWUSKQB-UHFFFAOYSA-L Synonym: sodium thiosulfate,sodium thiosulphate,disodium thiosulfate,sodium thiosulfate anhydrous,hypo,sodiumthiosulfate,chlorine cure,chlorine control,declor-it,thiosulfuric acid, disodium salt PubChem CID: 24477 IUPAC Name: disodium;dioxido-oxo-sulfanylidene-$l^{6}-sulfane SMILES: [Na+].[Na+].[O-]S([S-])(=O)=O

Pricing & Availability
Specifications

PubChem CID	24477
CAS	7772-98-7
Molecular Weight (g/mol)	158.10
MDL Number	MFCD00003499
SMILES	[Na+].[Na+].[O-]S([S-])(=O)=O
Synonym	sodium thiosulfate,sodium thiosulphate,disodium thiosulfate,sodium thiosulfate anhydrous,hypo,sodiumthiosulfate,chlorine cure,chlorine control,declor-it,thiosulfuric acid, disodium salt
IUPAC Name	disodium;dioxido-oxo-sulfanylidene-$l^{6}-sulfane
InChI Key	AKHNMLFCWUSKQB-UHFFFAOYSA-L
Molecular Formula	Na2O3S2

CombiCoulomat Fritless Reagent, Apura™, EMD Chemicals

Synonym: Coulometric Single Solution

Pricing & Availability
Specifications

Synonym	Coulometric Single Solution

TBS, Tris Buffered Saline, 1X Solution, pH 7.4, Molecular Biology, Fisher BioReagents

Pricing & Availability
Specifications

Boiling Point	100°C
Name Note	1X Solution, pH 7.4
CAS	77-86-1
Protease	Protease free
Color	Colorless
Physical Form	Liquid
Chemical Name or Material	Tris Buffered Saline
Grade	Molecular Biology
Synonym	TBS
DNase	DNase free
Recommended Storage	RT
ChemAlert Storage Symbol	Gray

Gibco™ PBS, pH 7.4 (flow cytometry grade)

Phosphate-Buffered Saline (PBS) is a balanced salt solution used for a variety of applications, including reagent preparation, diluting cells for flow cytometry and as a cell culture reagent.

Pricing & Availability

Ricca Chemical Company Buffer, Reference Standard, pH 10.00 ± 0.01 at 25°C (Color Coded Blue), Ricca Chemical

Pricing & Availability
Specifications

Boiling Point	100°C
Color	Blue
Physical Form	Liquid
CAS Min %	0.39
Chemical Name or Material	Buffer, Reference Standard
Concentration	1X
For Use With (Application)	Calibration
Name Note	pH 10.00 ± 0.01 at 25 deg C (Color Coded Blue)
CAS	7732-18-5
For Use With (Equipment)	pH Meter and Electrode
Solubility Information	Miscible
pH	10
DOT Information	Not Regulated by DOT
Solution Type	Colored pH Buffer
CAS Max %	0.41
Melting Point	0°C

Organic Carbon Standard, 1000 ppm C, Ricca Chemical

CAS: 877-24-7 Molecular Formula: C8H5KO4 Molecular Weight (g/mol): 204.222 InChI Key: IWZKICVEHNUQTL-UHFFFAOYSA-M PubChem CID: 23676735 IUPAC Name: potassium;2-carboxybenzoate SMILES: C1=CC=C(C(=C1)C(=O)O)C(=O)[O-].[K+]

Pricing & Availability
Specifications

PubChem CID	23676735
CAS	877-24-7
Molecular Weight (g/mol)	204.222
SMILES	C1=CC=C(C(=C1)C(=O)O)C(=O)[O-].[K+]
IUPAC Name	potassium;2-carboxybenzoate
InChI Key	IWZKICVEHNUQTL-UHFFFAOYSA-M
Molecular Formula	C8H5KO4

Buffer, Reference Standard, pH 1.00 ± 0.01 at 25°C, Ricca Chemical

Pricing & Availability
Specifications

Name Note	pH 1.00± 0.01 at 25°C
CAS	7732-18-5
For Use With (Equipment)	pH Meter and Electrode
Color	Colorless
Physical Form	Liquid
pH	1
Chemical Name or Material	Buffer, Reference Standard
Concentration	1X
For Use With (Application)	Calibration
Solution Type	pH Buffer

Invitrogen™ TE, pH 8.0, RNase-free

Invitrogen molecular biology grade, TE, pH 8.0 solution is supplied in one bottle containing 500 mL. The buffer is certified RNase-free, economical, and ready-to-use.

Pricing & Availability
Specifications

Packaging	Bottle
Physical Form	Liquid
pH	8.0
Recommended Storage	Store at room temperature.
Product Line	Ambion

Ricca Chemical Company Nitrite Nitrogen Standard, 1000 ppm N (3285 ppm NO₂^-), Ricca Chemical

CAS: 7758-09-0 Molecular Formula: KNO2 Molecular Weight (g/mol): 85.10 MDL Number: MFCD00011408 InChI Key: BXNHTSHTPBPRFX-UHFFFAOYSA-M PubChem CID: 516910 IUPAC Name: potassium nitrite SMILES: [K+].[O-]N=O

Pricing & Availability
Specifications

PubChem CID	516910
CAS	7758-09-0
Molecular Weight (g/mol)	85.10
MDL Number	MFCD00011408
SMILES	[K+].[O-]N=O
IUPAC Name	potassium nitrite
InChI Key	BXNHTSHTPBPRFX-UHFFFAOYSA-M
Molecular Formula	KNO2

Tris-Glycine-SDS, 10X Solution (Electrophoresis), Fisher BioReagents™

Pricing & Availability
Specifications

Color	Undesignated
Physical Form	Liquid
Chemical Name or Material	Tris-Glycine-SDS
Grade	Electrophoresis
Identification	Pass Test
DNase	DNase free
Filtered Through	Filtered through a 0.2-micron filter.
ChemAlert Storage Symbol	Gray
Name Note	10X Solution
Concentration or Composition (by Analyte or Components)	0.25M Tris Base, 1.92M Glycine, and 1.0% (w/v) SDS.
CAS	151-21-3
Protease	Protease free
Synonym	TG-SDS
Purity Grade Notes	DNase-, RNase- and Protease-Free
Recommended Storage	RT

LabChem, Inc. Titration (TAN) Solvent, Certified, LabChem™

Pricing & Availability

Invitrogen™ Tris (1 M), pH 7.0, RNase-free

Invitrogen Molecular biology grade, 1M Tris, pH 7.0 solution is supplied in one bottle. The buffer is certified RNase-free, economical, and ready-to-use.

Pricing & Availability
Specifications

Formulation	1,3-Propanediol, 2-Amino-2-(Hydroxymethyl)-,Hydrochloride
Physical Form	Liquid
pH	7
Grade	Molecular Biology
Recommended Storage	Store at room temperature.
Concentration	1 M
Product Line	Ambion

FisherTab™ TT-35 Kjeldahl Tablets, Fisher Chemical

Composition per tablet: 3.5g K₂SO₄ + 0.1g CuSO₄ + 0.1g TiO₂

Pricing & Availability

Prev
1
2
3
4
5
6
...
2,909
Next

Welcome to fishersci.com

Buffers and Standards

Filtered Search Results

Narrow Results

HEPES Buffer, 1M Solution, pH 7.3 (Molecular Biology), Fisher BioReagents™ GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

CombiCoulomat Fritless Reagent, Apura™, EMD Chemicals GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

Organic Carbon Standard, 1000 ppm C, Ricca Chemical Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Buffer, Reference Standard, pH 1.00 ± 0.01 at 25°C, Ricca Chemical Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Ricca Chemical Company Nitrite Nitrogen Standard, 1000 ppm N (3285 ppm NO2-), Ricca Chemical Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Tris-Glycine-SDS, 10X Solution (Electrophoresis), Fisher BioReagents™ GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

HEPES Buffer, 1M Solution, pH 7.3 (Molecular Biology), Fisher BioReagents™

CombiCoulomat Fritless Reagent, Apura™, EMD Chemicals

Organic Carbon Standard, 1000 ppm C, Ricca Chemical

Buffer, Reference Standard, pH 1.00 ± 0.01 at 25°C, Ricca Chemical

Ricca Chemical Company Nitrite Nitrogen Standard, 1000 ppm N (3285 ppm NO₂^-), Ricca Chemical

Tris-Glycine-SDS, 10X Solution (Electrophoresis), Fisher BioReagents™