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 (24,175)

Spectroscopy Standards (5,643)

General Chemistry Solutions (5,062)

Matrix Blanks and Standardization Solutions (4,295)

Life Science Buffers (4,179)

Electrochemistry Buffers (2,347)

Environmental Testing Standards (1,857)

Electrochemistry Standards (1,241)

Karl Fischer Buffers and Reagents (473)

Isotope Standards (387)

Viscosity Standards (259)

Quality Control and Proficiency Samples (183)

Kjeldahl Buffers and Reagents (90)

Gel Filtration Standards (58)

Matrix Modifiers (29)

Osmolality Standards (12)

Smoke Point Reference (10)

Polarimetric Standards (6)

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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

601 – 615 of 44,681 results

601

Buffer solution pH 10.00 (+/-0.024 @ 25oC) Colored Blue Specpure NIST Traceable

CAS: 1336-21-6 | H5NO | 35.05 g/mol

Pricing & Availability

602

Thulium, plasma standard solution, Specpure™ Tm 1000μg/mL

MDL Number: MFCD00011281

Pricing & Availability
Specifications

MDL Number	MFCD00011281

603

Promotions Available

Lithium aluminum hydride, 1M solution in THF, AcroSeal™

CAS: 16853-85-3 | AlH4Li | 37.95 g/mol

Pricing & Availability
Specifications

Linear Formula	LiAlH₄
Molecular Weight (g/mol)	37.95
Color	Gray
Physical Form	Turbid Solution
Chemical Name or Material	Lithium Aluminum hydride
SMILES	[Li+].[AlH4-]
Merck Index	15, 344
InChI Key	OCZDCIYGECBNKL-UHFFFAOYSA-N
Density	0.9000g/mL
PubChem CID	21226445
Percent Purity	3.9 to 4.5% (as LiAlH4)
Fieser	01,581; 02,242; 03,176; 04,291; 05,382; 06,325; 07,196; 08,286; 09,274; 10,236; 11,289; 12,272; 13,61; 14,190; 15,184; 16,133; 17,162
CAS	109-99-9
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. Handle under inert gas. Protect from moisture. 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. Immediately call a POISON CENTER or doctor/physician.
MDL Number	MFCD00011075
Health Hazard 2	GHS H Statement May cause respiratory irritation. Causes skin irritation. Causes serious eye damage. Highly flammable liquid and vapor. In contact with water releases flammable gases which may ignite spontaneously. May form explosive peroxides. Suspected of causing cancer. Harmful if swallowed. May cause drowsiness or dizziness.
Flash Point	−17°C
Solubility Information	Solubility in water: vigorous reaction.
Health Hazard 1	Danger
Synonym	lithium aluminum hydride,lithium aluminum hydride,aluminum lithium hydride,lithiumaluminiumhydride,aluminum iii lithium hydride,lithium alanate,lithium aluminum tetrahydride,lithiumaluminiumhydrid,litiumaluminum hydride,lithim aluminum hydride
IUPAC Name	lithium(1+) alumanuide
Molecular Formula	AlH4Li
Formula Weight	37.95
Specific Gravity	0.9

604

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Thermo Scientific Chemicals Tricine, 98%, for biochemistry

CAS: 4-1-5704 Molecular Formula: C6H13NO5 Molecular Weight (g/mol): 179.17 MDL Number: MFCD00004277 InChI Key: SEQKRHFRPICQDD-UHFFFAOYSA-N Synonym: N-(2-Hydroxy-1, 1-bis(hydroxymethyl)ethyl)glycine,N-[Tris(hydroxymethyl)methyl]glycine PubChem CID: 79784 ChEBI: CHEBI:39063 IUPAC Name: 2-[[1,3-dihydroxy-2-(hydroxymethyl)propan-2-yl]amino]acetic acid SMILES: C(C(=O)O)NC(CO)(CO)CO

Pricing & Availability
Specifications

PubChem CID	79784
CAS	4-1-5704
Molecular Weight (g/mol)	179.17
ChEBI	CHEBI:39063
MDL Number	MFCD00004277
SMILES	C(C(=O)O)NC(CO)(CO)CO
Synonym	N-(2-Hydroxy-1, 1-bis(hydroxymethyl)ethyl)glycine,N-[Tris(hydroxymethyl)methyl]glycine
IUPAC Name	2-[[1,3-dihydroxy-2-(hydroxymethyl)propan-2-yl]amino]acetic acid
InChI Key	SEQKRHFRPICQDD-UHFFFAOYSA-N
Molecular Formula	C6H13NO5

605

Sulfate, Ion chromatography standard solution, Specpure™, SO4-2 1000μg/mL

MDL Number: MFCD00145343

Pricing & Availability
Specifications

MDL Number	MFCD00145343

606

Ammonium Sulfide TS, Ricca Chemical

CAS: 7783-08-6 Molecular Formula: K2O4Se Molecular Weight (g/mol): 221.16 InChI Key: YAZJAPBTUDGMKO-UHFFFAOYSA-L Synonym: selenic vi acid,h2seo4,unii-hv0y51nc4j,hv0y51nc4j,hsdb 675,dihydroxidodioxidoselenium,h2so4e,aq. soln.,seo2 oh 2 PubChem CID: 1089 ChEBI: CHEBI:18170 IUPAC Name: selenic acid SMILES: O[Se](=O)(=O)O

Pricing & Availability
Specifications

PubChem CID	1089
CAS	7783-08-6
Molecular Weight (g/mol)	221.16
ChEBI	CHEBI:18170
SMILES	O[Se](=O)(=O)O
Synonym	selenic vi acid,h2seo4,unii-hv0y51nc4j,hv0y51nc4j,hsdb 675,dihydroxidodioxidoselenium,h2so4e,aq. soln.,seo2 oh 2
IUPAC Name	selenic acid
InChI Key	YAZJAPBTUDGMKO-UHFFFAOYSA-L
Molecular Formula	K2O4Se

607

Initial Calibration Verification Standard I For ICP/MS, SPEX CertiPrep™

Instrument Check Multi-Element Standard 1 for ICP-MS, 125 mL, Claritas PPT™ Grade, 10 μg/mL, SPEX CertiPrep™. ISO Guide 34 Certified, NIST Traceable Certified Reference Materials. Supplied with comprehensive Certificate of Analysis.

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608

MilliporeSigma™ Refractive Index Brix Standards

For determining Brix value by refractometers

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609

Hydrogen chloride, 2M in diethyl ether

CAS: 7647-01-0 Molecular Formula: ClH Molecular Weight (g/mol): 36.46 MDL Number: MFCD00011324 MFCD00792839 InChI Key: VEXZGXHMUGYJMC-UHFFFAOYSA-N Synonym: hydrochloric acid,hydrogen chloride,muriatic acid,chlorohydric acid,acide chlorhydrique,chlorwasserstoff,spirits of salt,hydrogen chloride hcl,anhydrous hydrochloric acid,chloorwaterstof PubChem CID: 313 ChEBI: CHEBI:17883 IUPAC Name: chlorane 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
Synonym	hydrochloric acid,hydrogen chloride,muriatic acid,chlorohydric acid,acide chlorhydrique,chlorwasserstoff,spirits of salt,hydrogen chloride hcl,anhydrous hydrochloric acid,chloorwaterstof
IUPAC Name	chlorane
InChI Key	VEXZGXHMUGYJMC-UHFFFAOYSA-N
Molecular Formula	ClH

610

TAE Buffer, 10X Solution, Molecular Biology Grade, Ultrapure

Pricing & Availability
Specifications

Physical Form	Solution
Chemical Name or Material	TAE Buffer
Grade	Molecular Biology, Ultrapure
TSCA	Yes
Recommended Storage	Ambient temperatures
Concentration	10X

611

Buffer solution, pH 12.00 (+/-0.01 @ 25oC), No Color, Specpure, NIST Traceable

CAS: 1336-21-6 | H5NO | 35.05 g/mol

Pricing & Availability
Specifications

PubChem CID	14923
CAS	1336-21-6
Molecular Weight (g/mol)	35.05
ChEBI	CHEBI:18219
MDL Number	MFCD00066650
Solubility Information	Immiscible with water.
Physical Form	Liquid
Chemical Name or Material	Buffer solution
SMILES	N.O
TSCA	Yes
Recommended Storage	Ambient temperatures
InChI Key	VHUUQVKOLVNVRT-UHFFFAOYSA-N
Molecular Formula	H5NO

612

Buffer Solution pH 12.45 at 25°C, Certified, LabChem™

Pricing & Availability
Specifications

Linear Formula	Na₂HPO₄
Color	Colorless
Traceability to NIST	Traceable to NIST
Physical Form	Liquid
Chemical Name or Material	Buffer Solution pH 12.45 at 25°C
Grade	Certified
Identification	Passes Test
Density	1g/mL
CAS	1310-73-2
Decomposition Information	Phosphine; Phosphorus oxides; Phosgene; Thermal decomposition generates: Corrosive vapors
Health Hazard 2	GHS H Statement Causes severe skin burns and eye damage.
Solubility Information	Soluble in water
Packaging	Poly Bottle
pH	12.45 ±0.05
Health Hazard 1	Danger
Recommended Storage	Room Temperature
Formula Weight	141.96
Specific Gravity	1g/mL
CAS Max %	0.16

613

Potassium Ferrocyanide, 10% (w/v), Ricca Chemical

CAS: 14459-95-1 Molecular Formula: C6H6FeK4N6O3 Molecular Weight (g/mol): 422.39 MDL Number: MFCD00167023 InChI Key: NLYKFUFIUWPPIZ-UHFFFAOYSA-N IUPAC Name: tetrapotassium hexacyanoironbis(ylium) trihydrate SMILES: O.O.O.[K+].[K+].[K+].[K+].N#C[Fe++](C#N)(C#N)(C#N)(C#N)C#N

Pricing & Availability
Specifications

CAS	14459-95-1
Molecular Weight (g/mol)	422.39
MDL Number	MFCD00167023
SMILES	O.O.O.[K+].[K+].[K+].[K+].N#C[Fe++](C#N)(C#N)(C#N)(C#N)C#N
IUPAC Name	tetrapotassium hexacyanoironbis(ylium) trihydrate
InChI Key	NLYKFUFIUWPPIZ-UHFFFAOYSA-N
Molecular Formula	C6H6FeK4N6O3

614

Buffer solution, pH 1.00 (+/-0.026 @ 25oC), No Color, Specpure, NIST Traceable

For Calibration of pH Meters | 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	MFCD00146252
Color	Colorless
Physical Form	Liquid
Health Hazard 1	H290
Chemical Name or Material	Buffer solution
TSCA	Yes
Recommended Storage	Ambient temperatures
Density	1.005
Vapor Pressure	23 hPa (17mm Hg) at 20°C

615

Phenylarsine Oxide (PAO) Titrant, 0.00564 N, Stabilized, 1 mL = 0.2 mg Cl₂, Ricca Chemical

CAS: 637-03-6 Molecular Formula: C6H5AsO Molecular Weight (g/mol): 168.03 MDL Number: MFCD00001990 InChI Key: BQVCCPGCDUSGOE-UHFFFAOYSA-N Synonym: phenylarsine oxide,oxophenylarsine,arzene,phenylarsenoxide,arsenosobenzene,arsine, oxophenyl,phenyl arsine oxide,benzene, arsenoso,fenylarsinoxid,caswell no. 060 PubChem CID: 4778 ChEBI: CHEBI:75253 IUPAC Name: arsorosobenzene SMILES: O=[As]C1=CC=CC=C1

Pricing & Availability
Specifications

PubChem CID	4778
CAS	637-03-6
Molecular Weight (g/mol)	168.03
ChEBI	CHEBI:75253
MDL Number	MFCD00001990
SMILES	O=[As]C1=CC=CC=C1
Synonym	phenylarsine oxide,oxophenylarsine,arzene,phenylarsenoxide,arsenosobenzene,arsine, oxophenyl,phenyl arsine oxide,benzene, arsenoso,fenylarsinoxid,caswell no. 060
IUPAC Name	arsorosobenzene
InChI Key	BQVCCPGCDUSGOE-UHFFFAOYSA-N
Molecular Formula	C6H5AsO

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Buffers and Standards

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Initial Calibration Verification Standard I For ICP/MS, SPEX CertiPrep™ Small and Specialty Supplier PartnerSmall and/or specialty supplier based on Federal laws and SBA requirements.Learn More

Buffer Solution pH 12.45 at 25°C, Certified, LabChem™ GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

Initial Calibration Verification Standard I For ICP/MS, SPEX CertiPrep™

Buffer Solution pH 12.45 at 25°C, Certified, LabChem™