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 (20,661)

Spectroscopy Standards (6,003)

General Chemistry Solutions (5,166)

Matrix Blanks and Standardization Solutions (4,299)

Life Science Buffers (3,846)

Electrochemistry Buffers (2,296)

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Electrochemistry Standards (1,218)

Karl Fischer Buffers and Reagents (477)

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Isotope Standards (237)

Quality Control and Proficiency Samples (209)

Kjeldahl Buffers and Reagents (108)

Gel Filtration Standards (57)

Matrix Modifiers (29)

Osmolality Standards (11)

Smoke Point Reference (9)

Polarimetric Standards (3)

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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 (473)
AA, ICP (1)
Acidimetry (3)
Calibrating the absorbance of spectrophotometers (1)
Calibration (7)
Calibration and Matrix Spikes (1)
Calibration and Verification (16)

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Solution Type

Antigen Retrieval Reagent (1)
Aqueous (2)
Buffer (431)
Buffer, Storage (2)
Calibration (8)
Cleaning (1)
Colored pH Buffer (35)

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46 – 60 of 41,216 results

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

Tris Hydrochloride, 1M Solution (pH 7.5/Mol. Biol.), Fisher BioReagents™

CAS: 77-86-1 Molecular Formula: C4H11NO3 Molecular Weight (g/mol): 121.136 InChI Key: LENZDBCJOHFCAS-UHFFFAOYSA-N Synonym: Tris-HCl 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
SMILES	C(C(CO)(CO)N)O
Synonym	Tris-HCl
IUPAC Name	2-amino-2-(hydroxymethyl)propane-1,3-diol
InChI Key	LENZDBCJOHFCAS-UHFFFAOYSA-N
Molecular Formula	C4H11NO3

Traceable™ One-Shot™ Conductivity Calibration Standards Certified Reference Material Producer (CRM), Fisherbrand™

Ideal for lab or field applications

Pricing & Availability
Specifications

For Use With (Equipment)	Conductivity Meter
Solubility	Soluble in water
Color	Clear
Packaging	6/Pk.
Chemical Name or Material	Conductivity Standard

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Buffer Solution, pH 3.00 (Certified), Fisher Chemical™

Pricing & Availability
Specifications

Boiling Point	100°C
Color	Undesignated
Traceability to NIST	Traceable to NIST.
Physical Form	Liquid
Chemical Name or Material	Buffer Solution, pH 3.00
Grade	Certified
Identification	Pass Test
ChemAlert Storage Symbol	Gray
Density	0.7g/cm³
CAS	7732-18-5
Health Hazard 3	Emergency Overview May cause eye, skin, and respiratory tract irritation. 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!
pH	3.00
Melting Point	0°C

Buffer Solution, pH 4.00 (Certified), Fisher Chemical™

Pricing & Availability
Specifications

CAS	67-56-1
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!
Color	Undesignated
Traceability to NIST	Traceable to NIST.
Physical Form	Liquid
pH	4.0
Chemical Name or Material	Buffer Solution, pH 4.00
Grade	Certified
Identification	Pass Test
ChemAlert Storage Symbol	Gray
Density	1.0054g/cm³

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Buffer Solution, pH 6.00 (Certified), Fisher Chemical™

Pricing & Availability
Specifications

Boiling Point	100°C
Color	Undesignated
Traceability to NIST	Traceable to NIST.
Physical Form	Liquid
Chemical Name or Material	Buffer Solution, pH 6.00
Grade	Certified
Identification	Pass Test
ChemAlert Storage Symbol	Gray
CAS	1310-73-2
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!
pH	6.00
Melting Point	0°C

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Buffer Solution, pH 7.40 (Certified), Fisher Chemical™

Potassium Phosphate Monobasic/Sodium Hydroxide

Pricing & Availability
Specifications

Boiling Point	100°C
CAS	7732-18-5
MDL Number	MFCD00134130
Traceability to NIST	Traceable to NIST.
Packaging	Poly Bottle
Physical Form	Liquid
pH	7.4
Chemical Name or Material	Buffer Solution, pH 7.40
Grade	Certified
Identification	Pass Test
ChemAlert Storage Symbol	Gray
Density	1.0g/cm³
Melting Point	0°C

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Buffer Solution, pH 9.00 (Certified), Fisher Chemical™

Boric Acid/Potassium Chloride/Sodium Hydroxide

Pricing & Availability
Specifications

Boiling Point	100°C
CAS	7732-18-5
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!
Traceability to NIST	Traceable to NIST.
Physical Form	Liquid
pH	9.00
Chemical Name or Material	Buffer Solution, pH 9.00
Grade	Certified
Identification	Pass Test
ChemAlert Storage Symbol	Gray
Melting Point	0°C

Fisher Scientific Carrez II Solution, Fisher Chemical™

Pricing & Availability
Specifications

CAS	7446-20-0
Packaging	Natural Poly Bottle
CAS Min %	6.59
Chemical Name or Material	Carrez II Solution
Grade	Laboratory
ChemAlert Storage Symbol	Gray
Methods	For AOAC Method 984.15
CAS Max %	6.85

Iodine Solution, Wijs, Fisher Chemical™

CAS: 7553-56-2 Molecular Formula: I2 Molecular Weight (g/mol): 253.81 MDL Number: MFCD00011355 MFCD00164163 InChI Key: PNDPGZBMCMUPRI-UHFFFAOYSA-N Synonym: iodine,diiodine,iodine crystals,iodine sublimed,tincture iodine,vistarin,eranol,iodio,iodine solution,iode PubChem CID: 807 ChEBI: CHEBI:17606 IUPAC Name: diiodine SMILES: II

Pricing & Availability
Specifications

PubChem CID	807
CAS	7553-56-2
Molecular Weight (g/mol)	253.81
ChEBI	CHEBI:17606
MDL Number	MFCD00011355 MFCD00164163
SMILES	II
Synonym	iodine,diiodine,iodine crystals,iodine sublimed,tincture iodine,vistarin,eranol,iodio,iodine solution,iode
IUPAC Name	diiodine
InChI Key	PNDPGZBMCMUPRI-UHFFFAOYSA-N
Molecular Formula	I2

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Silver Nitrate Solution (0.1N (N/10)/Certified), Fisher Chemical™

CAS: 7761-88-8 Molecular Formula: AgNO3 Molecular Weight (g/mol): 169.87 MDL Number: MFCD00003414 InChI Key: SQGYOTSLMSWVJD-UHFFFAOYSA-N Synonym: silver nitrate,silvernitrate,lunar caustic,silbernitrat,argenti nitras,nitrate d'argent,nitric acid silver i salt,silver mononitrate,silver i nitrate,argerol PubChem CID: 24470 ChEBI: CHEBI:32130 IUPAC Name: silver(1+) nitrate SMILES: [Ag+].[O-][N+]([O-])=O

Pricing & Availability
Specifications

PubChem CID	24470
CAS	7761-88-8
Molecular Weight (g/mol)	169.87
ChEBI	CHEBI:32130
MDL Number	MFCD00003414
SMILES	[Ag+].[O-][N+]([O-])=O
Synonym	silver nitrate,silvernitrate,lunar caustic,silbernitrat,argenti nitras,nitrate d'argent,nitric acid silver i salt,silver mononitrate,silver i nitrate,argerol
IUPAC Name	silver(1+) nitrate
InChI Key	SQGYOTSLMSWVJD-UHFFFAOYSA-N
Molecular Formula	AgNO3

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Sodium Hypochlorite Solution (4-6%/Laboratory), Fisher Chemical™

CAS: 7681-52-9 Molecular Formula: ClNaO Molecular Weight (g/mol): 74.439 MDL Number: MFCD00011120 InChI Key: SUKJFIGYRHOWBL-UHFFFAOYSA-N Synonym: sodium hypochlorite,antiformin,sodium oxychloride,chlorox,clorox,javex,javelle water,hypochlorous acid, sodium salt,hypochlorite sodium,carrel-dakin solution PubChem CID: 23665760 ChEBI: CHEBI:32146 IUPAC Name: sodium;hypochlorite SMILES: [O-]Cl.[Na+]

Pricing & Availability
Specifications

PubChem CID	23665760
CAS	7681-52-9
Molecular Weight (g/mol)	74.439
ChEBI	CHEBI:32146
MDL Number	MFCD00011120
SMILES	[O-]Cl.[Na+]
Synonym	sodium hypochlorite,antiformin,sodium oxychloride,chlorox,clorox,javex,javelle water,hypochlorous acid, sodium salt,hypochlorite sodium,carrel-dakin solution
IUPAC Name	sodium;hypochlorite
InChI Key	SUKJFIGYRHOWBL-UHFFFAOYSA-N
Molecular Formula	ClNaO

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Electrode Storage Solution, Fisher BioReagents™

For use in storage of pH electrodes

Pricing & Availability

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Fisher Chemical Bis-Tris, Fisher BioReagents

CAS: 6976-37-0 Molecular Formula: C8H19NO5 Molecular Weight (g/mol): 209.242 InChI Key: OWMVSZAMULFTJU-UHFFFAOYSA-N Synonym: 2,2-Bis(hydroxymethyl)-2,2?,2?-nitrilotriethanol,2, 2-Bis(hydroxymethyl)-2, 2?,Bis(2-hydroxyethyl)amino-tris(hydroxymethyl)methane PubChem CID: 81462 ChEBI: CHEBI:41250 IUPAC Name: 2-[bis(2-hydroxyethyl)amino]-2-(hydroxymethyl)propane-1,3-diol SMILES: C(CO)N(CCO)C(CO)(CO)CO

Pricing & Availability
Specifications

PubChem CID	81462
CAS	6976-37-0
Molecular Weight (g/mol)	209.242
ChEBI	CHEBI:41250
SMILES	C(CO)N(CCO)C(CO)(CO)CO
Synonym	2,2-Bis(hydroxymethyl)-2,2?,2?-nitrilotriethanol,2, 2-Bis(hydroxymethyl)-2, 2?,Bis(2-hydroxyethyl)amino-tris(hydroxymethyl)methane
IUPAC Name	2-[bis(2-hydroxyethyl)amino]-2-(hydroxymethyl)propane-1,3-diol
InChI Key	OWMVSZAMULFTJU-UHFFFAOYSA-N
Molecular Formula	C8H19NO5

Fisher Scientific Fluoride Standard, 100 ppm F^-, Fisherbrand

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

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Buffers and Standards

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

Tris Hydrochloride, 1M Solution (pH 7.5/Mol. Biol.), Fisher BioReagents™ GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

Buffer Solution, pH 3.00 (Certified), Fisher Chemical™ GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

Buffer Solution, pH 4.00 (Certified), Fisher Chemical™ GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

Buffer Solution, pH 6.00 (Certified), Fisher Chemical™ GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

Buffer Solution, pH 7.40 (Certified), Fisher Chemical™ GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

Buffer Solution, pH 9.00 (Certified), Fisher Chemical™ GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

Fisher Scientific Carrez II Solution, Fisher Chemical™ Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Silver Nitrate Solution (0.1N (N/10)/Certified), Fisher Chemical™ GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

Sodium Hypochlorite Solution (4-6%/Laboratory), Fisher Chemical™ GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

Electrode Storage Solution, Fisher BioReagents™ GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

Fisher Chemical Bis-Tris, Fisher BioReagents GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

Fisher Scientific Fluoride Standard, 100 ppm F-, Fisherbrand 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™

Tris Hydrochloride, 1M Solution (pH 7.5/Mol. Biol.), Fisher BioReagents™

Buffer Solution, pH 3.00 (Certified), Fisher Chemical™

Buffer Solution, pH 4.00 (Certified), Fisher Chemical™

Buffer Solution, pH 6.00 (Certified), Fisher Chemical™

Buffer Solution, pH 7.40 (Certified), Fisher Chemical™

Buffer Solution, pH 9.00 (Certified), Fisher Chemical™

Fisher Scientific Carrez II Solution, Fisher Chemical™

Silver Nitrate Solution (0.1N (N/10)/Certified), Fisher Chemical™

Sodium Hypochlorite Solution (4-6%/Laboratory), Fisher Chemical™

Electrode Storage Solution, Fisher BioReagents™

Fisher Chemical Bis-Tris, Fisher BioReagents

Fisher Scientific Fluoride Standard, 100 ppm F^-, Fisherbrand