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 (24,152)

Spectroscopy Standards (5,649)

General Chemistry Solutions (5,062)

Matrix Blanks and Standardization Solutions (4,282)

Life Science Buffers (4,168)

Electrochemistry Buffers (2,348)

Environmental Testing Standards (1,855)

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 (658)
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Production Products (187)
Science Education (212)
Small and Specialty Supplier (18,502)

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

406 – 420 of 44,646 results

406

CombiCoulomat Fritless Reagent, Apura™, EMD Chemicals

Synonym: Coulometric Single Solution

Pricing & Availability
Specifications

Synonym	Coulometric Single Solution

407

Buffer, Reference Standard, pH 10.00 ± 0.01 at 25°C (Color Coded Blue), Ricca Chemical

Pricing & Availability
Specifications

Boiling Point	100°C
Color	Blue
Physical Form	Liquid
CAS Min %	0.39
Chemical Name or Material	Buffer, Reference Standard
Concentration	1X
For Use With (Application)	Calibration
Name Note	pH 10.00 ± 0.01 at 25 deg C (Color Coded Blue)
CAS	7732-18-5
For Use With (Equipment)	pH Meter and Electrode
Solubility Information	Miscible
pH	10
DOT Information	Not Regulated by DOT
Solution Type	Colored pH Buffer
CAS Max %	0.41
Melting Point	0°C

408

Buffer, Reference Standard, pH 1.00 ± 0.01 at 25°C, Ricca Chemical

Pricing & Availability
Specifications

Name Note	pH 1.00± 0.01 at 25°C
CAS	7732-18-5
For Use With (Equipment)	pH Meter and Electrode
Color	Colorless
Physical Form	Liquid
pH	1
Chemical Name or Material	Buffer, Reference Standard
Concentration	1X
For Use With (Application)	Calibration
Solution Type	pH Buffer

409

hydrogen chloride, 4N solution in 1,4-dioxane, AcroSeal™

CAS: 7647-01-0 | ClH | 36.46 g/mol

Pricing & Availability
Specifications

Linear Formula	HCl
Molecular Weight (g/mol)	36.46
ChEBI	CHEBI:17883
InChI Key	VEXZGXHMUGYJMC-UHFFFAOYSA-N
Density	1.0500g/mL
PubChem CID	313
Name Note	4N solution in 1, 4-dioxane
Formula Weight	36.45
Color	Colorless to White
Physical Form	Crystals or Crystalline Powder
Chemical Name or Material	Hydrochloric acid
SMILES	Cl
Merck Index	14, 4794
Concentration	3.95 to 4.40N
CAS	123-91-1
Health Hazard 3	GHS P Statement: Wear eye protection/face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF SWALLOWED: rinse mouth. Do NOT induce vomiting. Immediately call a POISON CENTER or doctor/physician. Use personal protective equipment as required. IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing. Avoid breathing dust/fume/gas/mist/vapors/spray. Keep container tightly closed. IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell. Wear protective gloves/protective clothing/eye protection/face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Keep away from heat/sparks/open flames/hot surfaces. - No smoking. Ground/Bond container and receiving equipment. WARNING: The information provided on this web site was developed in compliance with European Union (EU) regulations and is correct to the best of our knowledge, information and belief at the date of its publication. The information given is designed only as a guide for safe handling and use. It is not to be considered as either a warranty or quality specification.
MDL Number	MFCD00011324 MFCD00792839
Health Hazard 2	GHS H Statement: Causes severe skin burns and eye damage. Suspected of causing cancer. Toxic if inhaled. Highly flammable liquid and vapor. May form explosive peroxides. Repeated exposure may cause skin dryness or cracking.
Flash Point	17°C
Packaging	AcroSeal™ Glass Bottle
Solubility Information	Solubility in water: soluble. Other solubilities: soluble in most organic solvents
Health Hazard 1	Danger
Synonym	hydrochloric acid,hydrogen chloride,muriatic acid,chlorohydric acid,acide chlorhydrique,chlorwasserstoff,spirits of salt,hydrogen chloride hcl,anhydrous hydrochloric acid,chloorwaterstof
IUPAC Name	hydrogen chloride
Molecular Formula	ClH
Specific Gravity	1.05

410

CombiTitrant 5, Aquastar™, MilliporeSigma™

Molecular Formula: Mixture Synonym: carl fischer

Pricing & Availability
Specifications

Synonym	carl fischer
Molecular Formula	Mixture

411

Hydrochloric acid, 0.01N Standardized Solution

CAS: 7647-01-0 Molecular Formula: ClH Molecular Weight (g/mol): 36.46 MDL Number: MFCD00011324 MFCD00792839 InChI Key: VEXZGXHMUGYJMC-UHFFFAOYSA-N PubChem CID: 313 ChEBI: CHEBI:17883 SMILES: Cl

Pricing & Availability
Specifications

PubChem CID	313
CAS	7647-01-0
Molecular Weight (g/mol)	36.46
ChEBI	CHEBI:17883
MDL Number	MFCD00011324 MFCD00792839
SMILES	Cl
InChI Key	VEXZGXHMUGYJMC-UHFFFAOYSA-N
Molecular Formula	ClH

412

Tris-HCl, 1M Solution, pH 8.0, Molecular Biology Grade, Ultrapure

CAS: 1185-53-1 Molecular Formula: C4H12ClNO3 Molecular Weight (g/mol): 157.594 InChI Key: QKNYBSVHEMOAJP-UHFFFAOYSA-N PubChem CID: 93573 IUPAC Name: 2-amino-2-(hydroxymethyl)propane-1,3-diol;hydrochloride SMILES: C(C(CO)(CO)N)O.Cl

Pricing & Availability
Specifications

PubChem CID	93573
CAS	1185-53-1
Molecular Weight (g/mol)	157.594
SMILES	C(C(CO)(CO)N)O.Cl
IUPAC Name	2-amino-2-(hydroxymethyl)propane-1,3-diol;hydrochloride
InChI Key	QKNYBSVHEMOAJP-UHFFFAOYSA-N
Molecular Formula	C4H12ClNO3

413

Glucose-Glutamic Acid, For BOD (Sterilized), Certified, 198.0mg/L BOD ±30.5mg/L, LabChem™

Pricing & Availability
Specifications

Linear Formula	C₆H₁₂O₆
Color	Colorless
Physical Form	Liquid
Chemical Name or Material	Glucose-Glutamic Acid
Identification	Passes Test
Grade	Certified
CAS	56-86-0
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	Nitrogen oxides; Carbon monoxide; Carbon dioxide
Health Hazard 2	GHS H Statement Solution is not hazardous.
Solubility Information	Soluble in water
Synonym	GGA
Recommended Storage	Room Temperature
Formula Weight	180.15
CAS Max %	0.015

414

TE Buffer, 1X Solution pH 8.0, Low EDTA, Molecular Biology Grade

Pricing & Availability
Specifications

PubChem CID	93573
CAS	1185-53-1
Molecular Weight (g/mol)	157.594
SMILES	C(C(CO)(CO)N)O.Cl
IUPAC Name	2-amino-2-(hydroxymethyl)propane-1,3-diol;hydrochloride
InChI Key	QKNYBSVHEMOAJP-UHFFFAOYSA-N
Molecular Formula	C4H12ClNO3

415

Sodium hydroxide, 0.01N Standardized Solution

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

416

Buffer solution, pH 1.68 (+/-0.026 @ 25°C), No Color, Specpure, NIST Traceable

CAS: 7447-40-7

Pricing & Availability
Specifications

Concentration or Composition (by Analyte or Components)	Potassium chloride: 0.7%; Hydrochloric acid: 0.7%; water: 98.6%
CAS	7732-18-5
Health Hazard 3	P234-P390
MDL Number	MFCD00147253
Color	Colorless
Solubility Information	Miscible with water.
Physical Form	Liquid
Health Hazard 1	H290
Chemical Name or Material	Buffer solution
TSCA	Yes
Recommended Storage	Ambient temperatures
Odor	Odorless
Vapor Pressure	23 hPa (17mm Hg) at 20°C

417

Promotions Available

Phenol/Chloroform/Isoamyl alcohol (25:24:1), stabilized, saturated with 100 mM Tris-EDTA to pH 8.0, for molecular

Phenol-Chloroform-Isoamyl alcohol mixture in the ratio of 25:24:1 (v/v/v), CAS # 136112-00-0, 67-66-3, 123-51-3, is a solution used in the purification of nucleic acids. | CAS: 136112-00-0 | C₆H₆O

Pricing & Availability
Specifications

Color	Yellow to Orange
Physical Form	Solution
UN Number	2927
Chemical Name or Material	Phenol/Chloroform/Isoamyl alcohol (25:24:1), stabilized, saturated with 100 mM Tris-EDTA to pH 8.0
Grade	Molecular Biology
Merck Index	14, 7241
Density	1.2800g/mL
Treatment(s)	Stabilized
Name Note	DNase, RNase and Protease Free
CAS	123-51-3
MDL Number	MFCD00133763
Health Hazard 2	Suspected of causing genetic defects, Suspected of damaging the unborn child, Causes damage to organs through prolonged or repeated exposure, Causes severe skin burns and eye damage, May cause drowsiness or dizziness, Suspected of causing cancer, Repeated exposure may cause skin dryness or cracking, Toxic if swallowed, in contact with skin or if inhaled
pH	7.8 to 8.2 (25°C)
Packaging	Glass bottle
Health Hazard 1	Germ cell mutagenicity (category 2), Reproductive toxicity (category 2), Specific target organ toxicity after repeated exposure (category 1), Skin corrosion/irritation (category 1), Specific target organ toxicity after single exposure (category 3), Carcinogenicity (category 2), Acute toxicity (category 3)
Molecular Formula	C₆H₆O
Formula Weight	94.11
Specific Gravity	1.28

418

Water standard oil, For coulometric Karl Fischer Titration, Apura™, MilliporeSigma™

Pricing & Availability

419

Buffer Solution, pH 10, Color-coded blue, Certified

Pricing & Availability
Specifications

Absorbance	Pass Test
Name Note	Traceable to NIST
pH	9.98 to 10.02
Chemical Name or Material	Buffer solution, pH 10.00
Grade	Certified
Identification	Pass Test

420

Potassium Carbonate, 15% (w/v), Ricca Chemical

CAS: 584-08-7 Molecular Formula: CK2O3 Molecular Weight (g/mol): 138.21 MDL Number: MFCD00011382 InChI Key: BWHMMNNQKKPAPP-UHFFFAOYSA-L IUPAC Name: dipotassium carbonate SMILES: [K+].[K+].[O-]C([O-])=O

Pricing & Availability
Specifications

CAS	584-08-7
Molecular Weight (g/mol)	138.21
MDL Number	MFCD00011382
SMILES	[K+].[K+].[O-]C([O-])=O
IUPAC Name	dipotassium carbonate
InChI Key	BWHMMNNQKKPAPP-UHFFFAOYSA-L
Molecular Formula	CK2O3

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Buffers and Standards

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CombiCoulomat Fritless Reagent, Apura™, EMD Chemicals GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

Buffer, Reference Standard, pH 10.00 ± 0.01 at 25°C (Color Coded Blue), Ricca Chemical 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

Water standard oil, For coulometric Karl Fischer Titration, Apura™, MilliporeSigma™ GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

CombiCoulomat Fritless Reagent, Apura™, EMD Chemicals

Buffer, Reference Standard, pH 10.00 ± 0.01 at 25°C (Color Coded Blue), Ricca Chemical

Water standard oil, For coulometric Karl Fischer Titration, Apura™, MilliporeSigma™