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 (24,150)

Spectroscopy Standards (5,640)

General Chemistry Solutions (5,062)

Matrix Blanks and Standardization Solutions (4,283)

Life Science Buffers (4,168)

Electrochemistry Buffers (2,348)

Environmental Testing Standards (1,849)

Electrochemistry Standards (1,241)

Karl Fischer Buffers and Reagents (473)

Isotope Standards (387)

Viscosity Standards (260)

Quality Control and Proficiency Samples (183)

Kjeldahl Buffers and Reagents (90)

Gel Filtration Standards (58)

Matrix Modifiers (29)

Osmolality Standards (12)

Smoke Point Reference (9)

Polarimetric Standards (6)

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Available on GSA/VA Contract (381)
SureTRACE (78)
Fast Shipping (657)
Greener Choice (89)
Production Products (187)
Science Education (212)
Small and Specialty Supplier (18,497)

Grade

AAS (55)
AAS Standard (11)
ACS (55)
ACS Reagent (25)
ACS/ASTM E 200/AOAC/EPA (7)
ACS/ASTM E 200/AOAC/USP Volumetric (5)
APHA/EPA (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 (30)
Capsule (11)
Chemvelope (1)
Clear Liquid (1)
Clear Liquid at 20°C (2)
Colorless Liquid (1)
Crystalline (17)

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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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For Use With (Application)

Accurate calibrations and NIST traceability (1)
Accurate calibrations and NIST traceability, laboratory and bench analysis (2)
Accurate calibrations and NIST traceability, portable and field analysis (1)
Accurate pH calibrations and NIST traceability, laboratory and bench analysis (8)
Accurate pH calibrations and NIST traceability, portable and field analysis (6)
Accurate, reproducible pH calibrations (16)
Agarose Gel Electrophoresis, Polyacrylamide Gel Electrophoresis (1)

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Search Within Results

166 – 180 of 44,631 results

166

Conductivity Standard, 5 μS/cm at 25°C, Ricca Chemical

Pricing & Availability
Specifications

Boiling Point	100°C
Type	Conductivity Standard
CAS	7732-18-5
CAS Min %	98.0
Packaging	Natural Poly Bottle
Solution Type	Conductivity Standard
CAS Max %	100.0

167

Buffer, Reference Standard, pH 2.00 ± 0.01 at 25°C, Ricca Chemical

Pricing & Availability
Specifications

Boiling Point	100°C
CAS	7447-40-7
For Use With (Equipment)	pH Meter and Electrode
Color	Colorless
Physical Form	Liquid
pH	2
Concentration	1X
Shelf Life	24 months
For Use With (Application)	Calibration
Solution Type	pH Buffer
Melting Point	0°C

168

Buffer, Reference Standard, pH 9.00 ± 0.01 at 25°C, Ricca Chemical

Pricing & Availability
Specifications

CAS	7447-40-7
For Use With (Equipment)	pH Meter and Electrode
Color	Colorless
Physical Form	Liquid
pH	9
Concentration	1X
For Use With (Application)	Calibration
Solution Type	pH Buffer

169

Ricca Chemical Company Potassium Permanganate Standard, 89.1 mg/L, equivalent to 100 ppm Cl₂, Ricca Chemical

For APHA Testing

Pricing & Availability
Specifications

Packaging	Amber Glass Bottle
Grade	Laboratory

170

Color Standard, Pt-Co, 500 Units APHA, Stock Solution, Certified, LabChem™

Pricing & Availability
Specifications

Linear Formula	K₂(PtCl₆)
Solubility	Soluble in water
Color	Orange
Physical Form	Liquid
UN Number	UN1789
Chemical Name or Material	Color Standard
Grade	Certified
Identification	Passes Test
Name Note	Pt-Co, 500 Units APHA, Stock Solution
CAS	7732-18-5
Health Hazard 3	GHS P Statement Obtain special instructions before use. Do not handle until all safety precautions have been read and understood. Do not breathe mist, vapors, spray. Contaminated work clothing must not be allowed out of the workplace. Wear protective gloves, eye protection, protective clothing, face protection. Wear respiratory protection. Wash exposed skin thoroughly after handling. If swallowed: Rinse mouth. Do not induce vomiting. Immediately call a poison center/doctor. If on skin (or hair): Remove immediately all contaminated clothing. Rinse skin with water/shower. Immediately call a poison center/doctor. Wash contaminated clothing before reuse. If inhaled: Remove person to fresh air and keep comfortable for breathing. Immediately call a poison center/doctor. If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a poison center/doctor. Store locked up. Dispose of contents/container to comply with local, state and federal regulations.
Health Hazard 2	GHS H Statement Causes severe skin burns and eye damage. May cause an allergic skin reaction. May cause allergy or asthma symptoms or breathing difficulties if inhaled. May cause cancer. May damage fertility or the unborn child.
Health Hazard 1	Danger
Packaging	Amber Glass
Recommended Storage	Room Temperature
Formula Weight	485.99
CAS Max %	0.1

171

Sodium hydroxide, 10N aq. soln.

CAS: 1310-73-2 Molecular Formula: HNaO Molecular Weight (g/mol): 39.997 MDL Number: MFCD00003548 InChI Key: HEMHJVSKTPXQMS-UHFFFAOYSA-M Synonym: sodium hydroxide,caustic soda,sodium hydrate,white caustic,soda lye,aetznatron,ascarite,sodium hydroxide na oh,sodium hydroxide solution,soda, caustic PubChem CID: 14798 ChEBI: CHEBI:32145 IUPAC Name: sodium;hydroxide SMILES: [OH-].[Na+]

Pricing & Availability
Specifications

PubChem CID	14798
CAS	1310-73-2
Molecular Weight (g/mol)	39.997
ChEBI	CHEBI:32145
MDL Number	MFCD00003548
SMILES	[OH-].[Na+]
Synonym	sodium hydroxide,caustic soda,sodium hydrate,white caustic,soda lye,aetznatron,ascarite,sodium hydroxide na oh,sodium hydroxide solution,soda, caustic
IUPAC Name	sodium;hydroxide
InChI Key	HEMHJVSKTPXQMS-UHFFFAOYSA-M
Molecular Formula	HNaO

172

Gibco™ Sodium Chloride (NaCl) Solutions, 0.1–2.0 M

Gibco Sodium Chloride (NaCl) solutions are sterile-filtered, packaged in bioprocess containers, and ready-to-use. Sourcing NaCl solutions can help streamline your buffer preparation allowing you to focus on additional critical steps in your biopharmaceutical processes.

Pricing & Availability
Specifications

Sterilization Method	0.2 μm Sterile-filtered
Endotoxin Level	≤ 1.0 EU/mL
Color	Clear
Physical Form	Liquid
pH	4.5–8.0
Chemical Name or Material	Sodium Chloride
Certifications/Compliance	GMP - 21 CFR 820, ISO 13485
Shelf Life	12 Months
Sterility	Sterile-filtered

173

Thermo Scientific Chemicals TRIS, 1.0M buffer soln., pH 7.4

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

174

Thermo Scientific™ Pierce™ Concentrated Buffer Stocks (10X and 20X)

Save time using Pierce Concentrated Buffer stock solutions (10X and 20X) with simple dilutions to expedite your experiment without sacrificing quality or consistency.

Pricing & Availability

175

Buffer, Reference Standard, pH 6.00 ± 0.01 at 25°C, Ricca Chemical

Pricing & Availability
Specifications

CAS	7732-18-5
For Use With (Equipment)	pH Meter and Electrode
Color	Colorless
Physical Form	Liquid
pH	6
CAS Min %	0.1
Concentration	1X
For Use With (Application)	Calibration
Solution Type	pH Buffer

176

Total Ionic Strength Adjustment Buffer (TISAB II), with CDTA, Ricca Chemical

For Fluoride Analysis using Ion Selective Electrodes

Pricing & Availability
Specifications

Name Note	With CDTA
CAS	13291-61-7
For Use With (Equipment)	Ion Selective Electrode
Physical Form	Liquid
pH	5.4
CAS Min %	0.33
Chemical Name or Material	Buffer Solution, Total Ionic Strength Adjustment Buffer (TISAB II)
Grade	Laboratory
Concentration	1X
For Use With (Application)	Fluoride Analysis
Solution Type	Buffer
CAS Max %	0.34

177

Invitrogen™ 10X TBE (powder)

Invitrogen 10X TBE (Tris-Borate-EDTA Buffer) is thoroughly tested for RNase and DNase contamination, making it ideal for use in sensitive application.

Pricing & Availability

178

Fluoride Standard, Certified, 1000ppm ±10ppm (1mL = 1mg F^-), LabChem™

CAS: 7681-49-4 Molecular Formula: FNa Molecular Weight (g/mol): 41.99 MDL Number: MFCD00003524 InChI Key: PUZPDOWCWNUUKD-UHFFFAOYSA-M PubChem CID: 5235 ChEBI: CHEBI:28741 IUPAC Name: sodium fluoride SMILES: [F-].[Na+]

Pricing & Availability
Specifications

PubChem CID	5235
CAS	7681-49-4
Molecular Weight (g/mol)	41.99
ChEBI	CHEBI:28741
MDL Number	MFCD00003524
SMILES	[F-].[Na+]
IUPAC Name	sodium fluoride
InChI Key	PUZPDOWCWNUUKD-UHFFFAOYSA-M
Molecular Formula	FNa

179

Thermo Scientific™ Pierce™ HeLa Digest/PRTC Standard

The Thermo Scientific Pierce HeLa Digest/PRTC Standard is a validated complex mammalian protein digest containing additional PRTC heavy isotope-labeled peptides designed for LC/MS performance testing.

Pricing & Availability
Specifications

Chemical Name or Material	HeLa Digest/PRTC Standard
Grade	MS
Synonym	HeLa/PRTC

180

Gibco™ HEPES (1 M)

Gibco HEPES (4-(2-hydroxyethyl)-1-piperazineethanesulfonic acid) is a zwitterionic organic chemical buffering agent commonly used in cell culture media. It is membrane impermeable, relatively stable, and has limited interference in key processes.

Pricing & Availability
Specifications

Sterilization Method	Sterile-filtered
Physical Form	Liquid
Chemical Name or Material	Zwitterionic Organic Chemical Buffer
Grade	Biochemical
For Use With (Application)	Chromatin Biology
Sterility	Sterile
Solution Type	Buffer

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Buffers and Standards

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Buffer, Reference Standard, pH 2.00 ± 0.01 at 25°C, Ricca Chemical SureTRACESupports traceability with guaranteed access to certificates and proactive change notifications.Learn More

Buffer, Reference Standard, pH 9.00 ± 0.01 at 25°C, Ricca Chemical SureTRACESupports traceability with guaranteed access to certificates and proactive change notifications.Learn More

Color Standard, Pt-Co, 500 Units APHA, Stock Solution, Certified, LabChem™ GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

Gibco™ Sodium Chloride (NaCl) Solutions, 0.1–2.0 M Greener ChoiceOffers one or more environmental benefits itemized in the U.S. FTC “Green Guides.”Learn More

Thermo Scientific™ Pierce™ Concentrated Buffer Stocks (10X and 20X) GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

Buffer, Reference Standard, pH 6.00 ± 0.01 at 25°C, Ricca Chemical SureTRACESupports traceability with guaranteed access to certificates and proactive change notifications.Learn More

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

Gibco™ HEPES (1 M) Greener ChoiceOffers one or more environmental benefits itemized in the U.S. FTC “Green Guides.”Learn More

Buffer, Reference Standard, pH 2.00 ± 0.01 at 25°C, Ricca Chemical

Buffer, Reference Standard, pH 9.00 ± 0.01 at 25°C, Ricca Chemical

Color Standard, Pt-Co, 500 Units APHA, Stock Solution, Certified, LabChem™

Gibco™ Sodium Chloride (NaCl) Solutions, 0.1–2.0 M

Thermo Scientific™ Pierce™ Concentrated Buffer Stocks (10X and 20X)

Buffer, Reference Standard, pH 6.00 ± 0.01 at 25°C, Ricca Chemical

Fluoride Standard, Certified, 1000ppm ±10ppm (1mL = 1mg F^-), LabChem™

Gibco™ HEPES (1 M)