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 (21,779)

Spectroscopy Standards (6,010)

General Chemistry Solutions (5,215)

Matrix Blanks and Standardization Solutions (4,320)

Life Science Buffers (3,850)

Electrochemistry Buffers (2,312)

Environmental Testing Standards (1,928)

Electrochemistry Standards (1,218)

Karl Fischer Buffers and Reagents (481)

Viscosity Standards (254)

Isotope Standards (246)

Quality Control and Proficiency Samples (206)

Kjeldahl Buffers and Reagents (108)

Gel Filtration Standards (57)

Matrix Modifiers (29)

Osmolality Standards (12)

Smoke Point Reference (10)

Polarimetric Standards (4)

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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)

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

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Percent Purity

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

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pH

≥12 to ≤14 (6)
>11 (1)
>11.5 (3)
>12 (43)
>13 (104)
>8 (1)
<0.5 (3)

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

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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)

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Solution Type

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

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61 – 75 of 42,466 results

Ricca Chemical Company Buffer, Reference Standard, pH 11.00 ± 0.01 at 25°C, Ricca Chemical

Pricing & Availability
Specifications

For Use With (Equipment)	pH Meter and Electrode
Physical Form	Liquid
pH	11
CAS Min %	0.11
Concentration	1X
For Use With (Application)	Calibration
Solution Type	pH Buffer
CAS Max %	0.11

Tetrahydrofuran Anhydrous (stabilized with BHT) 99.5+%, TCI America™

CAS: 109-99-9 Molecular Formula: C4H8O Molecular Weight (g/mol): 72.11 MDL Number: MFCD00005356 InChI Key: WYURNTSHIVDZCO-UHFFFAOYSA-N Synonym: tetrahydrofuran,furan, tetrahydro,butylene oxide,furanidine,hydrofuran,tetramethylene oxide,oxacyclopentane,1,4-epoxybutane,tetrahydrofuranne,tetraidrofurano PubChem CID: 8028 ChEBI: CHEBI:26911 IUPAC Name: oxolane SMILES: C1CCOC1

Pricing & Availability
Specifications

PubChem CID	8028
CAS	109-99-9
Molecular Weight (g/mol)	72.11
ChEBI	CHEBI:26911
MDL Number	MFCD00005356
SMILES	C1CCOC1
Synonym	tetrahydrofuran,furan, tetrahydro,butylene oxide,furanidine,hydrofuran,tetramethylene oxide,oxacyclopentane,1,4-epoxybutane,tetrahydrofuranne,tetraidrofurano
IUPAC Name	oxolane
InChI Key	WYURNTSHIVDZCO-UHFFFAOYSA-N
Molecular Formula	C4H8O

Ricca Chemical Company Conductivity Standard, 1413 μS/cm at 25°C, Ricca Chemical

Pricing & Availability
Specifications

Boiling Point	100°C
Type	Conductivity Standard
Color	Colorless
pH	6.7 to 7.3
Physical Form	Liquid
Chemical Name or Material	Conductivity Standard
Odor	Odorless
Solution Type	Conductivity Standard

Ricca Chemical Company Sodium Thiosulfate, 0.100 N (N/10), Ricca Chemical

CAS: 10102-17-7 Molecular Formula: H10Na2O8S2 InChI Key: PODWXQQNRWNDGD-UHFFFAOYSA-L Synonym: sodium thiosulfate pentahydrate,ametox,sodium thiosulfate, pentahydrate,antichlor,tinver,disodium thiosulfate pentahydrate,unii-hx1032v43m,ccris 3952,thiosulfuric acid, disodium salt, pentahydrate,sodium hyposulfite pentahydrate PubChem CID: 61475 ChEBI: CHEBI:32150

Pricing & Availability
Specifications

PubChem CID	61475
CAS	10102-17-7
ChEBI	CHEBI:32150
Synonym	sodium thiosulfate pentahydrate,ametox,sodium thiosulfate, pentahydrate,antichlor,tinver,disodium thiosulfate pentahydrate,unii-hx1032v43m,ccris 3952,thiosulfuric acid, disodium salt, pentahydrate,sodium hyposulfite pentahydrate
InChI Key	PODWXQQNRWNDGD-UHFFFAOYSA-L
Molecular Formula	H10Na2O8S2

Buffer Solution, pH 4.00, Color-Coded Red (Certified), Fisher Chemical™

pH/temperature conversions given on label

Pricing & Availability
Specifications

Boiling Point	100°C
Description	pH/temperature conversions given on label.
Color	Red
Traceability to NIST	Traceable to NIST.
Physical Form	Liquid
Chemical Name or Material	Buffer Solution, pH 4.00, Color-Coded Red
Grade	Certified
Identification	Pass Test
ChemAlert Storage Symbol	Gray
Density	1.0g/cm³
Absorbance	Pass Test
Concentration or Composition (by Analyte or Components)	Potassium Hydrogen Phthalate
CAS	16423-68-0
Health Hazard 3	Emergency Overview Contains a known or suspected carcinogen. The toxicological properties have not been fully investigated. Use personal protective equipment. Ensure adequate ventilation. Wash off immediately with plenty of water for at least 15 minutes. Get medical attention immediately if symptoms occur. 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. Get medical attention immediately if symptoms occur. Do not induce vomiting. Do not induce vomiting. Obtain medical attention. NFPA Health:1 Flammability:0 Instability:0
MDL Number	MFCD00146206
Health Hazard 2	CAUTION!
Solubility Information	Soluble in water
pH	4.0
Specific Gravity	1
Melting Point	0°C

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

Use with NuPAGE Novex Tris-Acetate gels

Pricing & Availability

Promotions Available

Buffer Solution, pH 10.00, Color-Coded Blue (Certified), Fisher Chemical™

Pricing & Availability
Specifications

Boiling Point	100°C
Color	Blue
Traceability to NIST	Traceable to NIST.
Physical Form	Liquid
Chemical Name or Material	Buffer Solution, pH 10.00, Color-Coded Blue
Grade	Certified
Identification	Pass Test
ChemAlert Storage Symbol	Gray
Absorbance	Pass Test
CAS	1310-58-3
Health Hazard 3	Emergency Overview May cause 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. Get medical attention immediately if symptoms occur. 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. Get medical attention immediately if symptoms occur. Do not induce vomiting. Obtain medical attention. Obtain medical attention. . NFPA Health:1 Flammability:0 Instability:0
MDL Number	MFCD00146206
Health Hazard 2	CAUTION!
pH	10.0
Specific Gravity	1.013 at 25°C
Melting Point	0°C

LabChem, Inc. Calcium Carbonate Standard , (1mL = 1mg CaCO₃ = 0.4mg Ca), for Hardness, Certified, 1.000 ±0.010mg CaCO₃/mL, LabChem™

CAS: 471-34-1 Molecular Formula: CCaO3 Molecular Weight (g/mol): 100.09 MDL Number: MFCD00010906 InChI Key: VTYYLEPIZMXCLO-UHFFFAOYSA-L PubChem CID: 10112 ChEBI: CHEBI:3311 IUPAC Name: calcium carbonate SMILES: [Ca++].[O-]C([O-])=O

Pricing & Availability
Specifications

PubChem CID	10112
CAS	471-34-1
Molecular Weight (g/mol)	100.09
ChEBI	CHEBI:3311
MDL Number	MFCD00010906
SMILES	[Ca++].[O-]C([O-])=O
IUPAC Name	calcium carbonate
InChI Key	VTYYLEPIZMXCLO-UHFFFAOYSA-L
Molecular Formula	CCaO3

Ricca Chemical Company Ammonia Nitrogen Standard, 1000 ppm N (1216 ppm NH₃), 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

Ricca Chemical Company EP Reference Solution Y₁, Yellow Reference Solution, Ricca Chemical

Pricing & Availability

Thermo Scientific Chemicals Glycine, 0.2M buffer soln., pH 2.5

CAS: 56-40-6 Molecular Formula: C2H5NO2 Molecular Weight (g/mol): 75.07 MDL Number: MFCD00008131 InChI Key: DHMQDGOQFOQNFH-UHFFFAOYSA-N IUPAC Name: 2-aminoacetic acid SMILES: NCC(O)=O

Pricing & Availability
Specifications

CAS	56-40-6
Molecular Weight (g/mol)	75.07
MDL Number	MFCD00008131
SMILES	NCC(O)=O
IUPAC Name	2-aminoacetic acid
InChI Key	DHMQDGOQFOQNFH-UHFFFAOYSA-N
Molecular Formula	C2H5NO2

Corning™ Molecular Biology Reagents

Used in molecular biology, nucleic acid purification applications

Pricing & Availability
Specifications

Quantity	6 x 1 L

Buffer Solution, pH 7.00, Color-Coded Yellow (Certified), Fisher Chemical™

Pricing & Availability
Specifications

Boiling Point	100°C
Description	Potassium Phosphate Monobasic/Sodium Hydroxide. pH/temperature conversions given on label.
Color	Yellow
Traceability to NIST	Traceable to NIST.
Physical Form	Liquid
Chemical Name or Material	Buffer Solution, pH 7.00, Color-Coded Yellow
Grade	Certified
Identification	Pass Test
ChemAlert Storage Symbol	Gray
Density	1.0g/cm³
Vapor Pressure	760mmHg at 20°C
Absorbance	Pass Test
CAS	1934-21-0
Health Hazard 3	Emergency Overview May cause eye, skin, and respiratory tract irritation. Handle in accordance with good industrial hygiene and safety practice. Wash off immediately with plenty of water for at least 15 minutes. Get medical attention immediately if symptoms occur. 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. Get medical attention immediately if symptoms occur. Do not induce vomiting. Obtain medical attention. . . NFPA Health:1 Flammability:0 Instability:0
MDL Number	MFCD00134130
Health Hazard 2	CAUTION!
Solubility Information	Soluble in water
pH	7.00
Specific Gravity	1
Melting Point	0°C

Ricca Chemical Company Buffer, Reference Standard, pH 13.00 ± 0.01 at 25°C, Ricca Chemical

Pricing & Availability
Specifications

Name Note	pH 13.00± 0.01 at 25°C
CAS	7447-40-7
For Use With (Equipment)	pH Meter and Electrode
Color	Colorless
Physical Form	Liquid
pH	13
CAS Min %	0.36
Chemical Name or Material	Buffer, Reference Standard
Concentration	1X
For Use With (Application)	Calibration
Solution Type	pH Buffer
CAS Max %	0.37

Ricca Chemical Company Buffer, Reference Standard, pH 12.00 ± 0.01 at 25°C, Ricca Chemical

Pricing & Availability
Specifications

Boiling Point	100°C
Color	Colorless
Physical Form	Liquid
CAS Min %	0.08
Chemical Name or Material	Buffer, Reference Standard
Grade	Reference Standard
Concentration	1X
For Use With (Application)	Calibration
Sterility	Non-sterile
Name Note	pH 12.00± 0.01 at 25°C
CAS	7732-18-5
For Use With (Equipment)	pH Meter and Electrode
Solubility Information	Miscible
pH	12
DOT Information	Not Regulated by DOT
Shelf Life	18 months
Solution Type	pH Buffer
CAS Max %	0.08
Melting Point	0°C

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Buffers and Standards

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Ricca Chemical Company Buffer, Reference Standard, pH 11.00 ± 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

Tetrahydrofuran Anhydrous (stabilized with BHT) 99.5+%, TCI America™ Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Ricca Chemical Company Sodium Thiosulfate, 0.100 N (N/10), Ricca Chemical Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Buffer Solution, pH 10.00, Color-Coded Blue (Certified), Fisher Chemical™ GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

Ricca Chemical Company Ammonia Nitrogen Standard, 1000 ppm N (1216 ppm NH3), Ricca Chemical Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Ricca Chemical Company EP Reference Solution Y1, Yellow Reference Solution, Ricca Chemical Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Corning™ Molecular Biology Reagents SureTRACESupports traceability with guaranteed access to certificates and proactive change notifications.Learn More GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

Buffer Solution, pH 7.00, Color-Coded Yellow (Certified), Fisher Chemical™ GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

Ricca Chemical Company Buffer, Reference Standard, pH 12.00 ± 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 Buffer, Reference Standard, pH 11.00 ± 0.01 at 25°C, Ricca Chemical

Tetrahydrofuran Anhydrous (stabilized with BHT) 99.5+%, TCI America™

Ricca Chemical Company Sodium Thiosulfate, 0.100 N (N/10), Ricca Chemical

Buffer Solution, pH 10.00, Color-Coded Blue (Certified), Fisher Chemical™

Ricca Chemical Company Ammonia Nitrogen Standard, 1000 ppm N (1216 ppm NH₃), Ricca Chemical

Ricca Chemical Company EP Reference Solution Y₁, Yellow Reference Solution, Ricca Chemical

Corning™ Molecular Biology Reagents

Buffer Solution, pH 7.00, Color-Coded Yellow (Certified), Fisher Chemical™

Ricca Chemical Company Buffer, Reference Standard, pH 12.00 ± 0.01 at 25°C, Ricca Chemical