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 (22,719)

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Life Science Buffers (3,953)

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Matrix Modifiers (29)

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Grade

AAS (55)
AAS Standard (11)
ACS (55)
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ACS/ASTM E 200/AOAC/EPA (7)
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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 Bottle (5)
1 Box (1)

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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)
>11.5 (2)
>12 (44)
>13 (100)
>8 (1)
<0.5 (3)
<1 (99)

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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 (469)
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 (374)
Buffer, Storage (2)
Calibration (8)
Cleaning (1)
Colored pH Buffer (35)

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Search Within Results

961 – 975 of 43,328 results

961

ICP-MS Stock Standard solution A for 200.8, Rev. 4.4, Specpure™

Pricing & Availability

962

Copper standard solution, for AAS, 1 mg/ml Cu in 2 to 5% HNO3

CAS: 7440-50-8 | Cu | 63.55 g/mol

Pricing & Availability
Specifications

Molecular Weight (g/mol)	63.55
ChEBI	CHEBI:30052
Solubility	Soluble in water
Color	Blue
Physical Form	Solution
Chemical Name or Material	Copper standard solution
Grade	AAS
SMILES	[Cu]
Concentration	997 to 1003 μg/mL of Cu(2+) in 2% HNO3 (20°C)
InChI Key	RYGMFSIKBFXOCR-UHFFFAOYSA-N
Density	8.92
PubChem CID	23978
Name Note	1 mg/ml Cu in 2% HNO3
Fieser	16,95; 16,181
CAS	7732-18-5
Health Hazard 3	GHS P Statement: 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 only in original container. Avoid breathing dust/fume/gas/mist/vapors/spray. IF ON SKIN: Wash with plenty of soap and water. Wash face, hands and any exposed skin thoroughly after handling. 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	MFCD00010965
Health Hazard 2	GHS H Statement: May cause respiratory irritation. Causes skin irritation. Causes serious eye irritation. May be corrosive to metals.
Health Hazard 1	GHS Signal Word: Warning
Packaging	Plastic bottle
IUPAC Name	copper
Molecular Formula	Cu
Formula Weight	63.55

963

Hydrogen chloride, ca 0.5M soln. in methanol

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: hydrogen chloride 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	hydrogen chloride
InChI Key	VEXZGXHMUGYJMC-UHFFFAOYSA-N
Molecular Formula	ClH

964

VeriSpec™ pH Buffer, Certified Reference Material

ISO 17025/17034 pH Buffer Certified Reference Materials provide the highest level of quality assurance. A certificate of analysis providing the specified property value, uncertainty, and traceability is available with every bottle.

Pricing & Availability
Specifications

For Use With (Equipment)	pH Meter and Electrode
Physical Form	Liquid
Certificate of Analysis	Yes
Grade	Certified
For Use With (Application)	Calibration
Solution Type	pH Buffer
Product Line	VeriSpec

965

Sodium hydroxide, 0.05N 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

966

Thermo Scientific Chemicals MES, 1.0M buffer soln., pH 6.5

CAS: 145224-94-8 Molecular Formula: C6H15NO5S Molecular Weight (g/mol): 213.248 MDL Number: MFCD00283848 InChI Key: MIIIXQJBDGSIKL-UHFFFAOYSA-N PubChem CID: 16218417 IUPAC Name: 2-morpholin-4-ylethanesulfonic acid;hydrate SMILES: C1COCCN1CCS(=O)(=O)O.O

Pricing & Availability
Specifications

PubChem CID	16218417
CAS	145224-94-8
Molecular Weight (g/mol)	213.248
MDL Number	MFCD00283848
SMILES	C1COCCN1CCS(=O)(=O)O.O
IUPAC Name	2-morpholin-4-ylethanesulfonic acid;hydrate
InChI Key	MIIIXQJBDGSIKL-UHFFFAOYSA-N
Molecular Formula	C6H15NO5S

967

Refractory Metals, plasma standard solution, Specpure™, Al, B, Cr, Hf, Mo, Nb, Si, Ta, Ti, V, W, Zr at 100μg/mL

Pricing & Availability
Specifications

Name Note	Al, B, Cr, Hf, Mo, Nb, Si, Ta, Ti, V, W, Zr at 100μg/mL
MDL Number	MFCD00151265
Health Hazard 2	Harmful if inhaled, May be corrosive to metals, Causes severe skin burns and eye damage
Physical Form	Liquid
Health Hazard 1	Acute toxicity (category 4), Corrosive to metals (category 1), Skin corrosion/irritation (category 1)
UN Number	UN3264
DOT Information	Transport Hazard Class: 8; Packing Group: III; Proper Shipping Name: CORROSIVE LIQUID, ACIDIC, INORGANIC, N.O.S.
Chemical Name or Material	Refractory Metals plasma standard solution
Grade	Specpure
TSCA	Yes
Recommended Storage	Ambient temperatures

968

Potassium chloride, 1M aq. soln.

CAS: 7447-40-7 Molecular Formula: ClK Molecular Weight (g/mol): 74.55 MDL Number: MFCD00011360 InChI Key: WCUXLLCKKVVCTQ-UHFFFAOYSA-M Synonym: potassium chloride,enseal,muriate of potash,klotrix,sylvite,slow-k,potassium chloride kcl,klor-con,chlorvescent,kalitabs PubChem CID: 4873 ChEBI: CHEBI:32588 IUPAC Name: potassium chloride SMILES: [Cl-].[K+]

Pricing & Availability
Specifications

PubChem CID	4873
CAS	7447-40-7
Molecular Weight (g/mol)	74.55
ChEBI	CHEBI:32588
MDL Number	MFCD00011360
SMILES	[Cl-].[K+]
Synonym	potassium chloride,enseal,muriate of potash,klotrix,sylvite,slow-k,potassium chloride kcl,klor-con,chlorvescent,kalitabs
IUPAC Name	potassium chloride
InChI Key	WCUXLLCKKVVCTQ-UHFFFAOYSA-M
Molecular Formula	ClK

969

NP-40 lysis buffer, low salt, Thermo Scientific™

Pricing & Availability
Specifications

Name Note	low salt
Color	Colorless
Solubility Information	Fully misicible in water.
Physical Form	Liquid
Chemical Name or Material	NP-40 lysis buffer
TSCA	Yes
Recommended Storage	Keep cold

970

MOPSO, 98%

CAS: 68399-77-9 Molecular Formula: C7H15NO5S Molecular Weight (g/mol): 225.259 MDL Number: MFCD00009629 InChI Key: NUFBIAUZAMHTSP-UHFFFAOYSA-N Synonym: mopso,2-hydroxy-3-morpholinopropanesulfonic acid,2-hydroxy-3-morpholinopropane-1-sulfonic acid,2-hydroxy-4-morpholinepropanesulphonic acid,3-morpholino-2-hydroxypropanesulfonic acid,3-n-morpholino-2-hydroxypropanesulfonic acid,2-hydroxy-3-morpholin-4-yl propane-1-sulfonic acid,beta-hydroxy-4-morpholinepropanesulfonic acid,3-4-morpholino-2-hydroxypropanesulfonic acid,4-morpholinepropanesulfonic acid, .beta.-hydroxy PubChem CID: 109333 IUPAC Name: 2-hydroxy-3-morpholin-4-ylpropane-1-sulfonic acid SMILES: C1COCCN1CC(CS(=O)(=O)O)O

Pricing & Availability
Specifications

PubChem CID	109333
CAS	68399-77-9
Molecular Weight (g/mol)	225.259
MDL Number	MFCD00009629
SMILES	C1COCCN1CC(CS(=O)(=O)O)O
Synonym	mopso,2-hydroxy-3-morpholinopropanesulfonic acid,2-hydroxy-3-morpholinopropane-1-sulfonic acid,2-hydroxy-4-morpholinepropanesulphonic acid,3-morpholino-2-hydroxypropanesulfonic acid,3-n-morpholino-2-hydroxypropanesulfonic acid,2-hydroxy-3-morpholin-4-yl propane-1-sulfonic acid,beta-hydroxy-4-morpholinepropanesulfonic acid,3-4-morpholino-2-hydroxypropanesulfonic acid,4-morpholinepropanesulfonic acid, .beta.-hydroxy
IUPAC Name	2-hydroxy-3-morpholin-4-ylpropane-1-sulfonic acid
InChI Key	NUFBIAUZAMHTSP-UHFFFAOYSA-N
Molecular Formula	C7H15NO5S

971

Bicine, 99+%, for analysis

CAS: 150-25-4 Molecular Formula: C6H12NNaO4 Molecular Weight (g/mol): 185.16 MDL Number: MFCD00004295 InChI Key: MFBDBXAVPLFMNJ-UHFFFAOYSA-M Synonym: N, N-Bis(2-hydroxyethyl)glycine,Diethylolglycine PubChem CID: 8761 ChEBI: CHEBI:40957 IUPAC Name: 2-[bis(2-hydroxyethyl)amino]acetic acid SMILES: [Na+].OCCN(CCO)CC([O-])=O

Pricing & Availability
Specifications

PubChem CID	8761
CAS	150-25-4
Molecular Weight (g/mol)	185.16
ChEBI	CHEBI:40957
MDL Number	MFCD00004295
SMILES	[Na+].OCCN(CCO)CC([O-])=O
Synonym	N, N-Bis(2-hydroxyethyl)glycine,Diethylolglycine
IUPAC Name	2-[bis(2-hydroxyethyl)amino]acetic acid
InChI Key	MFBDBXAVPLFMNJ-UHFFFAOYSA-M
Molecular Formula	C6H12NNaO4

972

Ricca Chemical Company Fluoride Standard, 500 ppm F^-, Ricca Chemical

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

973

Lead AA Standard, Certified, 1000ppm ±10ppm (1mL = 1mg Pb), LabChem™

CAS: 10099-74-8 Molecular Formula: N2O6Pb Molecular Weight (g/mol): 331.20 MDL Number: MFCD00011153 InChI Key: RLJMLMKIBZAXJO-UHFFFAOYSA-N PubChem CID: 24924 ChEBI: CHEBI:37187 IUPAC Name: λ²-lead(2+) dinitrate SMILES: [Pb++].[O-][N+]([O-])=O.[O-][N+]([O-])=O

Pricing & Availability
Specifications

PubChem CID	24924
CAS	10099-74-8
Molecular Weight (g/mol)	331.20
ChEBI	CHEBI:37187
MDL Number	MFCD00011153
SMILES	[Pb++].[O-][N+]([O-])=O.[O-][N+]([O-])=O
IUPAC Name	λ²-lead(2+) dinitrate
InChI Key	RLJMLMKIBZAXJO-UHFFFAOYSA-N
Molecular Formula	N2O6Pb

974

GTE buffer, Thermo Scientific™

For miniprep and DNA purification

Pricing & Availability
Specifications

Physical Form	Liquid
Chemical Name or Material	GTE buffer
TSCA	Yes
Recommended Storage	Keep cold

975

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

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