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 (24,051)

Spectroscopy Standards (5,659)

General Chemistry Solutions (5,035)

Matrix Blanks and Standardization Solutions (4,282)

Life Science Buffers (4,126)

Electrochemistry Buffers (2,328)

Environmental Testing Standards (1,865)

Electrochemistry Standards (1,229)

Karl Fischer Buffers and Reagents (467)

Isotope Standards (376)

Viscosity Standards (251)

Quality Control and Proficiency Samples (206)

Kjeldahl Buffers and Reagents (90)

Gel Filtration Standards (57)

Matrix Modifiers (29)

Osmolality Standards (12)

Smoke Point Reference (10)

Polarimetric Standards (6)

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Available on GSA/VA Contract (382)
SureTRACE (78)
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Greener Choice (96)
Production Products (191)
Science Education (205)
Small and Specialty Supplier (7,020)

Grade

AAS (66)
ACS (194)
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. (4)

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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 (97)

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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 (37)
Capsule (11)
Chemvelope (1)
Clear Liquid (1)
Clear Liquid at 20°C (2)
Colorless Liquid (1)
Crystalline (22)

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Solution Type

Antigen Retrieval Reagent (1)
Aqueous (3)
Buffer (587)
Buffer, Storage (4)
Calibration (8)
Cleaning, Storage, pH Buffer (15)
Colored pH Buffer (43)

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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 (15)
Agarose Gel Electrophoresis, Polyacrylamide Gel Electrophoresis (10)

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Search Within Results

211 – 225 of 44,446 results

211

Ammonium Oxalate TS, 3.5% (w/v), Ricca Chemical

CAS: 6009-70-7 Molecular Formula: C2H10N2O5 Molecular Weight (g/mol): 142.111 InChI Key: MSMNVXKYCPHLLN-UHFFFAOYSA-N Synonym: ammonium oxalate monohydrate,ammonium oxalate monohydrate, acs,ethanedioic acid, diammonium salt, monohydrate,diazanium oxalate hydrate,acmc-1aw90,ksc493e5j,diammonium hydrate oxalate,oxalic acid ammonium salt monohydrate PubChem CID: 516808 IUPAC Name: diazanium;oxalate;hydrate SMILES: C(=O)(C(=O)[O-])[O-].[NH4+].[NH4+].O

Pricing & Availability
Specifications

PubChem CID	516808
CAS	6009-70-7
Molecular Weight (g/mol)	142.111
SMILES	C(=O)(C(=O)[O-])[O-].[NH4+].[NH4+].O
Synonym	ammonium oxalate monohydrate,ammonium oxalate monohydrate, acs,ethanedioic acid, diammonium salt, monohydrate,diazanium oxalate hydrate,acmc-1aw90,ksc493e5j,diammonium hydrate oxalate,oxalic acid ammonium salt monohydrate
IUPAC Name	diazanium;oxalate;hydrate
InChI Key	MSMNVXKYCPHLLN-UHFFFAOYSA-N
Molecular Formula	C2H10N2O5

212

ZoBell's Solution, Oxidation-Reduction Potential (ORP) Standard, Ricca Chemical

Pricing & Availability
Specifications

Boiling Point	100°C
Name Note	Oxidation-Reduction Potential (ORP) Standard
CAS	7732-18-5
Physical Form	Liquid
CAS Min %	0.11
Chemical Name or Material	ZoBell's Solution
CAS Max %	0.11

213

Conductivity Standard, 10,000 μS/cm (10 mS/cm) at 25°C, Ricca Chemical

5400 ppm TDS as NaCl

Pricing & Availability
Specifications

Boiling Point	100°C
Type	Conductivity Standard
Name Note	10mS/cm ((10, 000μmho/cm) at 25°C, 5400ppm as NaCl
Concentration or Composition (by Analyte or Components)	5400ppm as NaCl
CAS	7732-18-5
Color	Colorless
Physical Form	Liquid
CAS Min %	0.53
Chemical Name or Material	Conductivity/TDS Standard
Solution Type	Conductivity Standard
CAS Max %	0.55

214

Conductivity Standard, 10 μS/cm at 25°C (4.7 ppm TDS as NaCl), Ricca Chemical

Pricing & Availability
Specifications

Boiling Point	100°C
Solubility	Completely miscible
Color	Colorless
Physical Form	Liquid
CAS Min %	5.0E-4
Chemical Name or Material	Conductivity Standard
Type	Conductivity Standard
Name Note	10μS/cm (10μmho/cm) at 25°C
Concentration or Composition (by Analyte or Components)	4.7 ppm as NaCl
CAS	7732-18-5
pH	6.7 to 7.3
DOT Information	Not Regulated by DOT
Shelf Life	12 months
Solution Type	Conductivity Standard
Melting Point	0°C
CAS Max %	5.0E-4

215

Iron AA Standard, 1000 ppm Fe in 3% HNO₃, Ricca Chemical

CAS: 7439-89-6 Molecular Formula: Fe Molecular Weight (g/mol): 55.85 MDL Number: MFCD00010999 InChI Key: XEEYBQQBJWHFJM-UHFFFAOYSA-N PubChem CID: 23925 ChEBI: CHEBI:82664 IUPAC Name: iron SMILES: [Fe]

Pricing & Availability
Specifications

PubChem CID	23925
CAS	7439-89-6
Molecular Weight (g/mol)	55.85
ChEBI	CHEBI:82664
MDL Number	MFCD00010999
SMILES	[Fe]
IUPAC Name	iron
InChI Key	XEEYBQQBJWHFJM-UHFFFAOYSA-N
Molecular Formula	Fe

216

Copper AA Standard, 1000 ppm Cu in 3% HNO₃, Ricca Chemical

CAS: 7440-50-8 Molecular Formula: Cu Molecular Weight (g/mol): 63.55 MDL Number: MFCD00010965 InChI Key: RYGMFSIKBFXOCR-UHFFFAOYSA-N PubChem CID: 23978 ChEBI: CHEBI:30052 IUPAC Name: copper SMILES: [Cu]

Pricing & Availability
Specifications

PubChem CID	23978
CAS	7440-50-8
Molecular Weight (g/mol)	63.55
ChEBI	CHEBI:30052
MDL Number	MFCD00010965
SMILES	[Cu]
IUPAC Name	copper
InChI Key	RYGMFSIKBFXOCR-UHFFFAOYSA-N
Molecular Formula	Cu

217

Conductivity Standard, 200,000 μS/cm (200 mS/cm) at 25°C, Ricca Chemical

Pricing & Availability

218

Ammonia Standard, 1000 ppm NH₃ (822 ppm N), Ricca Chemical

CAS: 12125-02-9 Molecular Formula: ClH4N Molecular Weight (g/mol): 53.49 MDL Number: MFCD00011420 InChI Key: NLXLAEXVIDQMFP-UHFFFAOYSA-N PubChem CID: 25517 ChEBI: CHEBI:31206 IUPAC Name: amine hydrochloride SMILES: N.Cl

Pricing & Availability
Specifications

PubChem CID	25517
CAS	12125-02-9
Molecular Weight (g/mol)	53.49
ChEBI	CHEBI:31206
MDL Number	MFCD00011420
SMILES	N.Cl
IUPAC Name	amine hydrochloride
InChI Key	NLXLAEXVIDQMFP-UHFFFAOYSA-N
Molecular Formula	ClH4N

219

Buffer, Precision Reference Standard, pH 7.000 ± 0.002 at 25°C (Color Coded Yellow), Ricca Chemical

Certified pH buffer solution used for the accurate calibration of pH meters.

Pricing & Availability

220

Buffer, Reference Standard, pH 8.00 ± 0.01 at 25°C, Ricca Chemical

Pricing & Availability
Specifications

For Use With (Equipment)	pH Meter and Electrode
Physical Form	Liquid
pH	8
Concentration	1X
For Use With (Application)	Calibration
Solution Type	pH Buffer

221

Buffer, Reference Standard, pH 7.00 ± 0.01 at 25°C (Color Coded Green), Ricca Chemical

Pricing & Availability
Specifications

CAS	7732-18-5
For Use With (Equipment)	pH Meter and Electrode
Color	Green
Physical Form	Liquid
pH	7
Concentration	1X
Shelf Life	24 months
For Use With (Application)	Calibration
Solution Type	Colored pH Buffer
CAS Max %	0.5

222

Turbidity Standard, 1000 NTU, Formazin, Ricca Chemical

CAS: 100-97-0 Molecular Formula: C6H12N4 Molecular Weight (g/mol): 140.19 InChI Key: VKYKSIONXSXAKP-UHFFFAOYSA-N PubChem CID: 4101 ChEBI: CHEBI:6824 SMILES: C1N2CN3CN1CN(C2)C3

Pricing & Availability
Specifications

PubChem CID	4101
CAS	100-97-0
Molecular Weight (g/mol)	140.19
ChEBI	CHEBI:6824
SMILES	C1N2CN3CN1CN(C2)C3
InChI Key	VKYKSIONXSXAKP-UHFFFAOYSA-N
Molecular Formula	C6H12N4

223

Fluoride Standard, 100 ppm F^-, Ricca Chemical

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

224

Buffer, Reference Standard, pH 6.86 ± 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	6.86
CAS Min %	0.33
Concentration	1X
For Use With (Application)	Calibration
Solution Type	pH Buffer
CAS Max %	0.34

225

Conductivity Standard, 20,000 μS/cm (20 mS/cm) at 25°C (11,000 ppm TDS as NaCl), Ricca Chemical

Pricing & Availability
Specifications

Boiling Point	100°C
Molecular Weight (g/mol)	58.44
ChEBI	CHEBI:26710
Color	Colorless
Physical Form	Liquid
Chemical Name or Material	Conductivity/TDS Standard
SMILES	[Na+].[Cl-]
InChI Key	FAPWRFPIFSIZLT-UHFFFAOYSA-M
PubChem CID	5234
Type	Conductivity Standard
Concentration or Composition Notes	11,000ppm as NaCl
CAS	7732-18-5
MDL Number	MFCD00003477
Packaging	Natural Poly Bottle
IUPAC Name	sodium chloride
Molecular Formula	ClNa

Buffers and Standards

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Conductivity Standard, 10,000 μS/cm (10 mS/cm) at 25°C, Ricca Chemical SureTRACESupports traceability with guaranteed access to certificates and proactive change notifications.Learn More

Buffer, Reference Standard, pH 8.00 ± 0.01 at 25°C, Ricca Chemical SureTRACESupports traceability with guaranteed access to certificates and proactive change notifications.Learn More

Fluoride Standard, 100 ppm F-, Ricca Chemical SureTRACESupports traceability with guaranteed access to certificates and proactive change notifications.Learn More

Conductivity Standard, 10,000 μS/cm (10 mS/cm) at 25°C, Ricca Chemical

Buffer, Reference Standard, pH 8.00 ± 0.01 at 25°C, Ricca Chemical

Fluoride Standard, 100 ppm F^-, Ricca Chemical