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 (24,009)

Spectroscopy Standards (5,594)

General Chemistry Solutions (5,037)

Matrix Blanks and Standardization Solutions (4,272)

Life Science Buffers (4,151)

Electrochemistry Buffers (2,347)

Environmental Testing Standards (1,847)

Electrochemistry Standards (1,237)

Karl Fischer Buffers and Reagents (470)

Isotope Standards (377)

Viscosity Standards (252)

Quality Control and Proficiency Samples (180)

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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Grade

AAS (66)
ACS (56)
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. (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 (35)
Capsule (11)
Chemvelope (1)
Clear Liquid (1)
Clear Liquid at 20°C (2)
Colorless Liquid (1)
Crystalline (22)

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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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Solution Type

Antigen Retrieval Reagent (1)
Aqueous (3)
Buffer (470)
Buffer, Storage (4)
Calibration (8)
Cleaning, Storage, pH Buffer (15)
Colored pH Buffer (35)

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Search Within Results

766 – 780 of 44,350 results

766

Calibration Standard 2A without Mercury For ICP/MS, SPEX CertiPrep™

ISO/IEC Guide 34 Certified, NIST-Traceable Certified Reference Material

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767

VeriSpec™ Sulphate - SO₄²^- Standard for Ion Chromatography 1000 ppm in H₂O, Ricca Chemical

CAS: 7783-20-2 Molecular Formula: H8N2O4S Molecular Weight (g/mol): 132.13 MDL Number: MFCD00003391 InChI Key: BFNBIHQBYMNNAN-UHFFFAOYSA-N PubChem CID: 6097028 ChEBI: CHEBI:62946 IUPAC Name: sulfuric acid diamine SMILES: N.N.OS(O)(=O)=O

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Specifications

PubChem CID	6097028
CAS	7783-20-2
Molecular Weight (g/mol)	132.13
ChEBI	CHEBI:62946
MDL Number	MFCD00003391
SMILES	N.N.OS(O)(=O)=O
IUPAC Name	sulfuric acid diamine
InChI Key	BFNBIHQBYMNNAN-UHFFFAOYSA-N
Molecular Formula	H8N2O4S

768

Promotions Available

Thermo Scientific Chemicals MES monohydrate, 99+%, for biochemistry

CAS: 145224-94-8 Molecular Formula: C6H15NO5S Molecular Weight (g/mol): 213.25 MDL Number: MFCD00149409 InChI Key: MIIIXQJBDGSIKL-UHFFFAOYSA-N Synonym: 2-(N-Morpholino)ethanesulfonic acid monohydrate PubChem CID: 16218417 IUPAC Name: 2-(morpholin-4-yl)ethane-1-sulfonic acid hydrate SMILES: O.OS(=O)(=O)CCN1CCOCC1

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Specifications

PubChem CID	16218417
CAS	145224-94-8
Molecular Weight (g/mol)	213.25
MDL Number	MFCD00149409
SMILES	O.OS(=O)(=O)CCN1CCOCC1
Synonym	2-(N-Morpholino)ethanesulfonic acid monohydrate
IUPAC Name	2-(morpholin-4-yl)ethane-1-sulfonic acid hydrate
InChI Key	MIIIXQJBDGSIKL-UHFFFAOYSA-N
Molecular Formula	C6H15NO5S

769

Borate Buffer, pH 9.5, for Ammonia and Organic Nitrogen Analysis, Ricca Chemical

For Analysis of Ammonia and organic Nitrogen

Pricing & Availability

770

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(Trimethylsilyl)methylmagnesium chloride, 1.3M solution in THF, AcroSeal™

CAS: 13170-43-9 Molecular Formula: C4H11ClMgSi Molecular Weight (g/mol): 146.97 MDL Number: MFCD00009916 InChI Key: NAQATMJWCJCHOZ-UHFFFAOYSA-M Synonym: trimethylsilylmethylmagnesium chloride,tmsch2mgcl,trimethylsilyl methylmagnesium chloride,trimethylsilyl methyl magnesium chloride,trimethylsilyl methylmagnesium chloride solution,me3sich2mgcl,naqatmjwcjchoz-uhfffaoysa-m,chlorotrimethylsilylmethyl magnesium,trimethylsiylmethylmagnesium chloride PubChem CID: 2734900 SMILES: C[Si](C)(C)C[Mg]Cl

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Specifications

PubChem CID	2734900
CAS	13170-43-9
Molecular Weight (g/mol)	146.97
MDL Number	MFCD00009916
SMILES	C[Si](C)(C)C[Mg]Cl
Synonym	trimethylsilylmethylmagnesium chloride,tmsch2mgcl,trimethylsilyl methylmagnesium chloride,trimethylsilyl methyl magnesium chloride,trimethylsilyl methylmagnesium chloride solution,me3sich2mgcl,naqatmjwcjchoz-uhfffaoysa-m,chlorotrimethylsilylmethyl magnesium,trimethylsiylmethylmagnesium chloride
InChI Key	NAQATMJWCJCHOZ-UHFFFAOYSA-M
Molecular Formula	C4H11ClMgSi

771

TEA, 0.2M buffer soln., pH 8.0, Thermo Scientific Chemicals

CAS: 102-71-6 Molecular Formula: C6H15NO3 Molecular Weight (g/mol): 149.19 MDL Number: MFCD00002855 InChI Key: GSEJCLTVZPLZKY-UHFFFAOYSA-N Synonym: Triethanolamine buffer solution PubChem CID: 7618 ChEBI: CHEBI:28621 IUPAC Name: 2-[bis(2-hydroxyethyl)amino]ethan-1-ol SMILES: OCCN(CCO)CCO

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Specifications

PubChem CID	7618
CAS	102-71-6
Molecular Weight (g/mol)	149.19
ChEBI	CHEBI:28621
MDL Number	MFCD00002855
SMILES	OCCN(CCO)CCO
Synonym	Triethanolamine buffer solution
IUPAC Name	2-[bis(2-hydroxyethyl)amino]ethan-1-ol
InChI Key	GSEJCLTVZPLZKY-UHFFFAOYSA-N
Molecular Formula	C6H15NO3

772

Tetrabutylammonium fluoride, 1M solution in THF, containing ca. 5% water

CAS: 429-41-4 | C16H36FN | 261.47 g/mol

Pricing & Availability
Specifications

Linear Formula	[CH₃(CH₂)₃]₄NF
Molecular Weight (g/mol)	261.47
ChEBI	CHEBI:51990
Chemical Name or Material	Tetrabutylammonium fluoride
SMILES	[F-].CCCC[N+](CCCC)(CCCC)CCCC
InChI Key	FPGGTKZVZWFYPV-UHFFFAOYSA-M
Density	0.8870g/mL
PubChem CID	2724141
Name Note	1M Solution in THF, Containing ca 5% Water
Fieser	04,477; 05,645; 07,353; 08,467; 09,444; 10,378; 11,499; 12,458; 14,293; 15,168; 17,363
CAS	7732-18-5
Health Hazard 3	GHS P Statement Keep away from heat/sparks/open flames/hot surfaces. - No smoking. IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water/shower. Wear protective gloves/protective clothing/eye protection/face protection. IF SWALLOWED: rinse mouth. Do NOT induce vomiting. 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 or doctor/physician.
MDL Number	MFCD00011747
Health Hazard 2	GHS H Statement Causes severe skin burns and eye damage. Suspected of causing cancer. May cause respiratory irritation. Highly flammable liquid and vapor. May form explosive peroxides. May cause drowsiness or dizziness.
Flash Point	−17°C
Packaging	Glass bottle
Health Hazard 1	Danger
Synonym	tetrabutylammonium fluoride,tbaf,tetrabutylazanium fluoride,tetrabutyl ammonium fluoride,tetra-n-butylammonium fluoride,tetrabutylamine, fluoride,n,n,n-tributylbutan-1-aminium fluoride,1-butanaminium, n,n,n-tributyl-, fluoride,n,n,n-tributyl-1-butanaminium fluoride,1-butanaminium, n,n,n-tributyl-, fluoride 1:1
TSCA	TSCA
IUPAC Name	tetrabutylazanium;fluoride
Molecular Formula	C16H36FN
EINECS Number	207-057-2
Formula Weight	261.46
Specific Gravity	0.887

773

Diisobutylaluminium hydride, 1.1M solution in cyclohexane, AcroSeal™

CAS: 1191-15-7 | C₈H₁₉Al

Pricing & Availability
Specifications

Linear Formula	[(CH₃)₂CHCH₂]₂AIH
Color	Undesignated
Physical Form	Solution
Chemical Name or Material	Diisobutylaluminium hydride
Merck Index	15, 3212
Concentration	19.5 to 20.5% (DIBAL-H, on Al basis)
Density	0.7800g/mL
Name Note	1.1M Solution in Cyclohexane
Fieser	01,260; 02,140; 03,101; 04,158; 05,224; 06,198; 07,111; 08,173; 09,171; 10,149; 11,185; 12,191; 13,115; 14,138; 15,137; 16,27; 17,123
CAS	110-82-7
Health Hazard 3	GHS P Statement: IF SWALLOWED: rinse mouth. Do NOT induce vomiting. 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. Immediately call a POISON CENTER or doctor/physician. Avoid breathing dust/fume/gas/mist/vapors/spray. IF SWALLOWED: Immediately call a POISON CENTRE or doctor/physician. Do NOT induce vomiting. Avoid release to the environment. Store in a dry place. Store in a closed container. IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing. 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	MFCD00008928
Health Hazard 2	GHS H Statement: May be fatal if swallowed and enters airways. May cause drowsiness or dizziness. Causes severe skin burns and eye damage. Very toxic to aquatic life with long lasting effects. In contact with water releases flammable gases which may ignite spontaneously.
Flash Point	−018°C
Solubility Information	Solubility in water: vigorous reaction. Other solubilities: miscible with saturated aliphatic and aromatic, hydrocarbons
Health Hazard 1	Danger
Synonym	DIBAL-H, 1.1M solution in cyclohexane
Beilstein	04, IV, 4400
Molecular Formula	C₈H₁₉Al
Formula Weight	142.22
Specific Gravity	0.78
Melting Point	-70.0°C

774

Sulfur in Light Mineral Oil standard solution, Specpure™, 1,000μg/g (0.10%)

MDL Number: MFCD00804270

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Specifications

MDL Number	MFCD00804270

775

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

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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

776

Thermo Scientific Chemicals Imidazole, 0.5M buffer soln., pH 7.5

CAS: 288-32-4 Molecular Formula: C3H4N2 Molecular Weight (g/mol): 68.08 MDL Number: MFCD00005183 InChI Key: RAXXELZNTBOGNW-UHFFFAOYSA-N IUPAC Name: 1H-imidazole SMILES: N1C=CN=C1

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Specifications

CAS	288-32-4
Molecular Weight (g/mol)	68.08
MDL Number	MFCD00005183
SMILES	N1C=CN=C1
IUPAC Name	1H-imidazole
InChI Key	RAXXELZNTBOGNW-UHFFFAOYSA-N
Molecular Formula	C3H4N2

777

Barium chloride, 0.5N Standardized Solution

CAS: 10361-37-2 Molecular Formula: BaCl2 Molecular Weight (g/mol): 208.23 MDL Number: MFCD00003445 InChI Key: WDIHJSXYQDMJHN-UHFFFAOYSA-L Synonym: barium chloride,barium dichloride,barium chloride solution,ccris 2286,barium chloride, anhydrous,barium chloride, ultra dry,bariumchlorid,dichlorobarium,dsstox_cid_24508 PubChem CID: 25204 ChEBI: CHEBI:63317 IUPAC Name: barium(2+);dichloride SMILES: [Cl-].[Cl-].[Ba++]

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Specifications

PubChem CID	25204
CAS	10361-37-2
Molecular Weight (g/mol)	208.23
ChEBI	CHEBI:63317
MDL Number	MFCD00003445
SMILES	[Cl-].[Cl-].[Ba++]
Synonym	barium chloride,barium dichloride,barium chloride solution,ccris 2286,barium chloride, anhydrous,barium chloride, ultra dry,bariumchlorid,dichlorobarium,dsstox_cid_24508
IUPAC Name	barium(2+);dichloride
InChI Key	WDIHJSXYQDMJHN-UHFFFAOYSA-L
Molecular Formula	BaCl2

778

Turbidity Standard, 50 NTU, Polymer Bead Suspension, Ricca Chemical

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779

Chloride Standard, (NaCl in Water), Certified, 1000ppm ±5ppm (1mL = 1mg Cl^-) (0.0282N), LabChem™

CAS: 7647-14-5 Molecular Formula: ClNa Molecular Weight (g/mol): 58.44 MDL Number: MFCD00003477 InChI Key: FAPWRFPIFSIZLT-UHFFFAOYSA-M PubChem CID: 5234 ChEBI: CHEBI:26710 IUPAC Name: sodium chloride SMILES: [Na+].[Cl-]

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Specifications

PubChem CID	5234
CAS	7647-14-5
Molecular Weight (g/mol)	58.44
ChEBI	CHEBI:26710
MDL Number	MFCD00003477
SMILES	[Na+].[Cl-]
IUPAC Name	sodium chloride
InChI Key	FAPWRFPIFSIZLT-UHFFFAOYSA-M
Molecular Formula	ClNa

780

Bromide, Ion chromatography standard solution, Specpure™ Br∣- 1000μg/mL

MDL Number: MFCD00134172

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Specifications

MDL Number	MFCD00134172

Buffers and Standards

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Calibration Standard 2A without Mercury For ICP/MS, SPEX CertiPrep™ GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

Chloride Standard, (NaCl in Water), Certified, 1000ppm ±5ppm (1mL = 1mg Cl-) (0.0282N), LabChem™ GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

Calibration Standard 2A without Mercury For ICP/MS, SPEX CertiPrep™

Chloride Standard, (NaCl in Water), Certified, 1000ppm ±5ppm (1mL = 1mg Cl^-) (0.0282N), LabChem™