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 (23,986)

Spectroscopy Standards (5,622)

General Chemistry Solutions (5,038)

Matrix Blanks and Standardization Solutions (4,259)

Life Science Buffers (4,141)

Electrochemistry Buffers (2,348)

Environmental Testing Standards (1,845)

Electrochemistry Standards (1,237)

Karl Fischer Buffers and Reagents (470)

Isotope Standards (377)

Viscosity Standards (253)

Quality Control and Proficiency Samples (180)

Kjeldahl Buffers and Reagents (90)

Gel Filtration Standards (57)

Matrix Modifiers (29)

Osmolality Standards (12)

Smoke Point Reference (9)

Polarimetric Standards (6)

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Available on GSA/VA Contract (381)
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Greener Choice (95)
Production Products (191)
Science Education (209)
Small and Specialty Supplier (7,030)

Grade

AAS (66)
ACS (56)
ACS Reagent (25)
ACS/ASTM E 200/AOAC/EPA (7)
ACS/ASTM E 200/AOAC/USP Volumetric (5)
APHA/EPA (5)
APHA/Hazen (5)

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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)

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Quantity

0.1 mol (1)
0.5 L (1)
0.5 mL (15)
0.5 mol (1)
1 Bottle (5)
1 Box (1)
1 Ea. (5)

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Percent Purity

≥ 4400 Units/mg (Nystatin) ≥ 5000 Units/mg (Nystatin) (1) (8)
≥ 85.0 % (1)
≥14% (BF3) (1)
≥30% (RT) (1)
≥30% (titration) (1)
≥35% (RT) (1)
≥40% (3)

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pH

≥12 to ≤14 (6)
>11.5 (1)
>12 (44)
>13 (97)
>8 (1)
<0.5 (3)
<1 (98)

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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)

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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)

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Physical Form

Aqueous Solution (35)
Capsule (11)
Chemvelope (1)
Clear Liquid (1)
Clear Liquid at 20°C (2)
Colorless Liquid (1)
Crystalline (22)

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Technique

AA (467)
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)

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Solution Type

Antigen Retrieval Reagent (1)
Aqueous (3)
Buffer (469)
Buffer, Storage (4)
Calibration (8)
Cleaning, Storage, pH Buffer (15)
Colored pH Buffer (35)

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61 – 75 of 44,339 results

Invitrogen™ TBE (10X), RNase-free

Molecular biology grade, Invitrogen 10X TBE solution is supplied in four bottles containing 1 L each. The buffer is certified RNase-free, economical, and ready-to-use.

Pricing & Availability
Specifications

Chemical Name or Material	Running Buffer
Grade	Molecular Biology
Recommended Storage	Store at room temperature.
Concentration	10X
Product Line	Ambion

Calcium Chloride, 2.75% (w/v), Ricca Chemical

CAS: 10035-04-8

Pricing & Availability
Specifications

CAS	10035-04-8

Thermo Scientific™ Pierce™ Yeast Digest Standard

The Thermo Scientific Pierce Yeast Digest Standard is a lyophilized yeast peptide mixture ideal for monitoring LC/MS system performance.

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Invitrogen™ Novex™ Tris-Glycine Native Running Buffer (10X)

Use with NuPAGE Novex Tris-Acetate gels

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Thermo Scientific Chemicals Krebs-Ringer Solution, HEPES-buffered

Standard physiological buffer that is suitable for various calcium imaging experiments. It is also used as a preserving agent.

Pricing & Availability
Specifications

Solubility Information	Not miscible or difficult to mix in water.
Packaging	Plastic bottle
Physical Form	Liquid
Chemical Name or Material	Krebs-Ringer Solution
TSCA	Yes
Recommended Storage	Ambient temperatures

Thermo Scientific Chemicals Tris(hydroxymethyl)aminomethane, ultrapure, 99.9%

CAS: 77-86-1 Molecular Formula: C4H11NO3 Molecular Weight (g/mol): 121.136 MDL Number: MFCD00004679 InChI Key: LENZDBCJOHFCAS-UHFFFAOYSA-N Synonym: TRIS PubChem CID: 6503 ChEBI: CHEBI:9754 IUPAC Name: 2-amino-2-(hydroxymethyl)propane-1,3-diol SMILES: C(C(CO)(CO)N)O

Pricing & Availability
Specifications

PubChem CID	6503
CAS	77-86-1
Molecular Weight (g/mol)	121.136
ChEBI	CHEBI:9754
MDL Number	MFCD00004679
SMILES	C(C(CO)(CO)N)O
Synonym	TRIS
IUPAC Name	2-amino-2-(hydroxymethyl)propane-1,3-diol
InChI Key	LENZDBCJOHFCAS-UHFFFAOYSA-N
Molecular Formula	C4H11NO3

Buffer Solution pH 7.0 at 25°C, Certified, LabChem™

Pricing & Availability
Specifications

Linear Formula	KH₂PO₄
Color	Colorless
Traceability to NIST	Traceable to NIST
Physical Form	Liquid
Chemical Name or Material	Buffer Solution pH 7.0 at 25°C
Grade	Certified
Identification	Passes Test
CAS	1310-73-2
Health Hazard 3	GHS P Statement If in contact with skin or eyes, rinse thoroughly with water for 15-20 minutes. If swallowed, get medical attention.
Decomposition Information	Phosphorus oxides; Sodium oxide
Health Hazard 2	GHS H Statement Solution is not hazardous.
Solubility Information	Soluble in water
pH	7.00 ±0.01
Recommended Storage	Room Temperature
Formula Weight	136.09
CAS Max %	0.08

Gibco™ CTS™ DPBS, calcium, magnesium

Gibco Cell Therapy Systems DPBS CTS™ is the classical Dulbecco's Phosphate Buffered Saline which contains calcium, magnesium but no phenol red.

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

Pricing & Availability
Specifications

Color	Undesignated
Physical Form	Liquid
Chemical Name or Material	Tris-Glycine
Grade	Electrophoresis
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)	Components: Tris (2-3%) and Glycine (13-14%). 0.25M Tris Base and 1.92M Glycine.
CAS	56-40-6
Protease	Protease free
Synonym	TG
Purity Grade Notes	DNase-, RNase- and Protease-Free
Recommended Storage	RT

Potassium Permanganate, 0.100 N (N/10), 0.0200 M (M/50), Ricca Tightrant™

CAS: 7722-64-7 Molecular Formula: KMnO4 Molecular Weight (g/mol): 158.032 InChI Key: VZJVWSHVAAUDKD-UHFFFAOYSA-N Synonym: potassium permanganate,chameleon mineral,condy's crystals,argucide,cairox,permanganate of potash,insta-perm,walko tablets,algae-k,solo san soo PubChem CID: 516875 IUPAC Name: potassium;permanganate SMILES: [O-][Mn](=O)(=O)=O.[K+]

Pricing & Availability
Specifications

PubChem CID	516875
CAS	7722-64-7
Molecular Weight (g/mol)	158.032
SMILES	[O-][Mn](=O)(=O)=O.[K+]
Synonym	potassium permanganate,chameleon mineral,condy's crystals,argucide,cairox,permanganate of potash,insta-perm,walko tablets,algae-k,solo san soo
IUPAC Name	potassium;permanganate
InChI Key	VZJVWSHVAAUDKD-UHFFFAOYSA-N
Molecular Formula	KMnO4

Thermo Scientific Chemicals TRIS, 1.0M buffer soln., pH 8.5, 0.2 micron filtered

CAS: 77-86-1 Molecular Formula: C4H11NO3 Molecular Weight (g/mol): 121.136 MDL Number: MFCD00004679 InChI Key: LENZDBCJOHFCAS-UHFFFAOYSA-N PubChem CID: 6503 ChEBI: CHEBI:9754 IUPAC Name: 2-amino-2-(hydroxymethyl)propane-1,3-diol SMILES: C(C(CO)(CO)N)O

Pricing & Availability
Specifications

PubChem CID	6503
CAS	77-86-1
Molecular Weight (g/mol)	121.136
ChEBI	CHEBI:9754
MDL Number	MFCD00004679
SMILES	C(C(CO)(CO)N)O
IUPAC Name	2-amino-2-(hydroxymethyl)propane-1,3-diol
InChI Key	LENZDBCJOHFCAS-UHFFFAOYSA-N
Molecular Formula	C4H11NO3

Silica Standard, 1000 ppm SiO₂ (467 ppm Si), Ricca Chemical

CAS: 6834-92-0 Molecular Formula: Na2O3Si Molecular Weight (g/mol): 122.062 InChI Key: NTHWMYGWWRZVTN-UHFFFAOYSA-N PubChem CID: 23266 ChEBI: CHEBI:60720 IUPAC Name: disodium;dioxido(oxo)silane SMILES: [O-][Si](=O)[O-].[Na+].[Na+]

Pricing & Availability
Specifications

PubChem CID	23266
CAS	6834-92-0
Molecular Weight (g/mol)	122.062
ChEBI	CHEBI:60720
SMILES	[O-][Si](=O)[O-].[Na+].[Na+]
IUPAC Name	disodium;dioxido(oxo)silane
InChI Key	NTHWMYGWWRZVTN-UHFFFAOYSA-N
Molecular Formula	Na2O3Si

Corning™ Molecular Biology Reagents

Used in molecular biology, nucleic acid purification applications

Pricing & Availability
Specifications

Quantity	6 x 1 L

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ChromaCare™ LC-MS Instrument Flush Solution

ChromaCare™ LC-MS Instrument Flush Solution is designed to prepare LC/MS instruments for start-up. By reducing background noise, this solution facilitates instrument installation and preventative maintenance routines. ∣ CAS: 75-05-8; 67-56-1; 67-63-0; 7732-18-5

Pricing & Availability
Specifications

Percent Purity	25% Acetonitrile, 25% Methanol, 25% Water, 25% 2-Propanol (IPA)
CAS	75-05-8; 67-56-1; 67-63-0; 7732-18-5
Color	Colorless
Physical Form	Liquid
Grade	LC-MS

Phenol Standard, Certified, 1000ppm ±10ppm (1mL = 1mg), LabChem™

Phenol Standard, C6H6O, CAS Number-108-95-2, 7732-18-5, 500mL, 99.9, 0.1, CHEBI:15882, Colorless, 1000ppm +/-10ppm (1mL - 1mg), 1g/mL, 94.11, Certified, GHS H Statement Solution is not hazardous.

Pricing & Availability
Specifications

Linear Formula	C₆H₅O₈
Molecular Weight (g/mol)	94.11
ChEBI	CHEBI:15882
Solubility	Soluble in water
Color	Colorless
Physical Form	Liquid
Chemical Name or Material	Phenol Standard
Grade	Certified
SMILES	OC1=CC=CC=C1
Identification	Passes Test
Concentration	1000 ppm ±10 ppm (1mL = 1mg)
InChI Key	ISWSIDIOOBJBQZ-UHFFFAOYSA-N
Density	1g/mL
PubChem CID	996
Name Note	1000ppm (1mL = 1mg)
CAS	7732-18-5
Health Hazard 3	GHS P Statement If in contact with skin or eyes, rinse thoroughly with water for 15-20 minutes. If swallowed, get medical attention.
MDL Number	MFCD00002143
Health Hazard 2	GHS H Statement Solution is not hazardous.
Packaging	Amber Glass
Recommended Storage	Room Temperature
IUPAC Name	phenol
Molecular Formula	C6H6O
Formula Weight	94.11
CAS Max %	0.1

Buffers and Standards

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Buffer Solution pH 7.0 at 25°C, Certified, LabChem™ GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

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

ChromaCare™ LC-MS Instrument Flush Solution Greener ChoiceOffers one or more environmental benefits itemized in the U.S. FTC “Green Guides.”Learn More

Phenol Standard, Certified, 1000ppm ±10ppm (1mL = 1mg), LabChem™ GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

Buffer Solution pH 7.0 at 25°C, Certified, LabChem™

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

ChromaCare™ LC-MS Instrument Flush Solution

Phenol Standard, Certified, 1000ppm ±10ppm (1mL = 1mg), LabChem™