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 (23,985)

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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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0.1 mol (1)
0.5 L (1)
0.5 mL (15)
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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)
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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)
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Technique

AA (467)
Acidimetry (3)
Calibrating the absorbance of spectrophotometers (1)
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Calibration and Verification of Kinematic and Dynamic Viscosity Test (15)

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Solution Type

Antigen Retrieval Reagent (1)
Aqueous (3)
Buffer (469)
Buffer, Storage (4)
Calibration (8)
Cleaning, Storage, pH Buffer (15)
Colored pH Buffer (35)

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Search Within Results

526 – 540 of 44,335 results

526

Organic Carbon Standard, 100 ppm C, Ricca Chemical

CAS: 7732-18-5 Molecular Formula: C8H5KO4 InChI Key: IWZKICVEHNUQTL-UHFFFAOYSA-M PubChem CID: 23676735 IUPAC Name: potassium;2-carboxybenzoate SMILES: C1=CC=C(C(=C1)C(=O)O)C(=O)[O-].[K+]

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Specifications

PubChem CID	23676735
CAS	7732-18-5
SMILES	C1=CC=C(C(=C1)C(=O)O)C(=O)[O-].[K+]
IUPAC Name	potassium;2-carboxybenzoate
InChI Key	IWZKICVEHNUQTL-UHFFFAOYSA-M
Molecular Formula	C8H5KO4

527

Promotions Available

Methylmagnesium chloride, 3M (22 wt.%) solution in THF, AcroSeal™

CAS: 676-58-4 Molecular Formula: CH3ClMg Molecular Weight (g/mol): 74.79 MDL Number: MFCD00000468 InChI Key: RQNMYNYHBQQZSP-UHFFFAOYSA-M Synonym: methylmagnesium chloride,chloromethylmagnesium,chloro methyl magnesium,magnesium, chloromethyl,memgcl,methylmagnesiumchloride,methyl magnesium chloride,unii-m5e1132g4w,ch3mgcl,qmabhcaih@ PubChem CID: 12670 IUPAC Name: chloro(methyl)magnesium SMILES: C[Mg]Cl

Pricing & Availability
Specifications

PubChem CID	12670
CAS	676-58-4
Molecular Weight (g/mol)	74.79
MDL Number	MFCD00000468
SMILES	C[Mg]Cl
Synonym	methylmagnesium chloride,chloromethylmagnesium,chloro methyl magnesium,magnesium, chloromethyl,memgcl,methylmagnesiumchloride,methyl magnesium chloride,unii-m5e1132g4w,ch3mgcl,qmabhcaih@
IUPAC Name	chloro(methyl)magnesium
InChI Key	RQNMYNYHBQQZSP-UHFFFAOYSA-M
Molecular Formula	CH3ClMg

528

Ammonia Standard, Certified, 1000ppm ±10ppm (1mL = 1mg NH₃), LabChem™

CAS: 12125-02-9 Molecular Formula: ClH4N Molecular Weight (g/mol): 53.49 MDL Number: MFCD00011420 InChI Key: NLXLAEXVIDQMFP-UHFFFAOYSA-N PubChem CID: 25517 ChEBI: CHEBI:31206 IUPAC Name: amine hydrochloride SMILES: N.Cl

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Specifications

PubChem CID	25517
CAS	12125-02-9
Molecular Weight (g/mol)	53.49
ChEBI	CHEBI:31206
MDL Number	MFCD00011420
SMILES	N.Cl
IUPAC Name	amine hydrochloride
InChI Key	NLXLAEXVIDQMFP-UHFFFAOYSA-N
Molecular Formula	ClH4N

529

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

530

Thermo Scientific Chemicals Sodium phosphate, 0.2M buffer soln., pH 7.0

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Specifications

MDL Number	MFCD00146206
Solubility Information	Fully miscible.
Physical Form	Liquid
pH	7.0
Chemical Name or Material	Sodium phosphate buffer soln.
TSCA	Yes
Recommended Storage	Ambient temperatures
Concentration	0.2 M

531

EP Reference Solution Y₁, Yellow Reference Solution, Ricca Chemical

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532

Buffer solution, pH 6.00 (+/-0.024 @ 25oC), No Color, Specpure, NIST Traceable

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Specifications

Name Note	NIST Traceable
Health Hazard 3	P234-P264b-P280-P302+P352-P305+P351+P338-P332+P313-P362-P390
Solubility	Miscible with water
MDL Number	MFCD00134130
Physical Form	Liquid
Health Hazard 1	H290-H315-H319
Chemical Name or Material	Buffer solution, pH 6.00 (±0.01 at 25°C)
Grade	Specpure
TSCA	Yes
Recommended Storage	Ambient temperatures

533

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

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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

534

Promotions Available

MOPS, 99%

CAS: 1132-61-2 Molecular Formula: C7H15NO4S Molecular Weight (g/mol): 209.26 MDL Number: MFCD00006183 InChI Key: DVLFYONBTKHTER-UHFFFAOYSA-N Synonym: 4-Morpholinepropanesulfonic acid; 3-(4-Morpholinyl)propanesulfonic acid PubChem CID: 70807 ChEBI: CHEBI:44115 SMILES: [O-]S(=O)(=O)CCC[NH+]1CCOCC1

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Specifications

PubChem CID	70807
CAS	1132-61-2
Molecular Weight (g/mol)	209.26
ChEBI	CHEBI:44115
MDL Number	MFCD00006183
SMILES	[O-]S(=O)(=O)CCC[NH+]1CCOCC1
Synonym	4-Morpholinepropanesulfonic acid; 3-(4-Morpholinyl)propanesulfonic acid
InChI Key	DVLFYONBTKHTER-UHFFFAOYSA-N
Molecular Formula	C7H15NO4S

535

Fluoride Standard, 0.5 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+]

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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

536

Potassium bis(trimethylsilyl)amide, 0.7M (15 wt.%) solution in toluene, AcroSeal™

CAS: 40949-94-8 | C6H18KNSi2 | 199.485 g/mol

Pricing & Availability
Specifications

Linear Formula	[(CH₃)₃Si]₂NK
Molecular Weight (g/mol)	199.485
Color	Yellow
Physical Form	Liquid
Chemical Name or Material	Potassium bis(trimethylsilyl)amide
SMILES	C[Si](C)(C)[N-][Si](C)(C)C.[K+]
Concentration	0.6 to 0.8M (Total base)
InChI Key	IUBQJLUDMLPAGT-UHFFFAOYSA-N
Density	0.8760g/mL
PubChem CID	3251421
Name Note	0.5M solution in toluene
Percent Purity	0.6 to 0.8 M (Total base)
CAS	108-88-3
Health Hazard 3	GHS P Statement IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. Obtain special instructions before use. 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. Keep away from heat/sparks/open flames/hot surfaces. - No smoking. Avoid release to the environment.
MDL Number	MFCD00010330
Health Hazard 2	GHS P Statement Causes severe skin burns and eye damage. May be fatal if swallowed and enters airways. May cause drowsiness or dizziness. May cause damage to organs through prolonged or repeated exposure. Suspected of damaging the unborn child. Highly flammable liquid and vapor. Suspected of causing cancer. Suspected of causing genetic defects if inhaled. Harmful to aquatic life with long lasting effects.
Health Hazard 1	Danger
Synonym	potassium bis trimethylsilyl amide,khmds,potassium hexamethyldisilazide,hexamethyldisilazane potassium salt,potassium bis trimethylsilyl azanide,potassium bis trimethylsilyl amide 1m sol. in thf,potassiumbis trimethylsilyl amide,hexamethyldislazane potassium salt,1,1,1,3,3,3-hexamethyldisilazane potassium salt,potassium bis-trimethylsilylamide
IUPAC Name	potassium;bis(trimethylsilyl)azanide
Molecular Formula	C6H18KNSi2
Formula Weight	199.49

537

Turbidity Standard, 100 NTU, Formazin, Ricca Chemical

CAS: 100-97-0 Molecular Formula: C6H12N4 Molecular Weight (g/mol): 140.19 InChI Key: VKYKSIONXSXAKP-UHFFFAOYSA-N PubChem CID: 4101 ChEBI: CHEBI:6824 SMILES: C1N2CN3CN1CN(C2)C3

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Specifications

PubChem CID	4101
CAS	100-97-0
Molecular Weight (g/mol)	140.19
ChEBI	CHEBI:6824
SMILES	C1N2CN3CN1CN(C2)C3
InChI Key	VKYKSIONXSXAKP-UHFFFAOYSA-N
Molecular Formula	C6H12N4

538

Thermo Scientific Chemicals TRIS-buffered saline (TBS, 10X) pH 8.0

CAS: 77-86-1 Molecular Formula: C4H11NO3 Molecular Weight (g/mol): 121.136 MDL Number: MFCD00004679 InChI Key: LENZDBCJOHFCAS-UHFFFAOYSA-N 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
MDL Number	MFCD00004679
SMILES	C(C(CO)(CO)N)O
IUPAC Name	2-amino-2-(hydroxymethyl)propane-1,3-diol
InChI Key	LENZDBCJOHFCAS-UHFFFAOYSA-N
Molecular Formula	C4H11NO3

539

Potassium hydroxide, 1.0N Standardized Solution

CAS: 1310-58-3 Molecular Formula: HKO Molecular Weight (g/mol): 56.11 MDL Number: MFCD00003553 InChI Key: KWYUFKZDYYNOTN-UHFFFAOYSA-M Synonym: potassium hydroxide,caustic potash,potash lye,potassium hydrate,hydroxyde de potassium,potassa,potasse caustique,potassium hydroxide k oh,potassium hydroxide solution,caswell no. 693 PubChem CID: 14797 ChEBI: CHEBI:32035 SMILES: [OH-].[K+]

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Specifications

PubChem CID	14797
CAS	1310-58-3
Molecular Weight (g/mol)	56.11
ChEBI	CHEBI:32035
MDL Number	MFCD00003553
SMILES	[OH-].[K+]
Synonym	potassium hydroxide,caustic potash,potash lye,potassium hydrate,hydroxyde de potassium,potassa,potasse caustique,potassium hydroxide k oh,potassium hydroxide solution,caswell no. 693
InChI Key	KWYUFKZDYYNOTN-UHFFFAOYSA-M
Molecular Formula	HKO

540

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

Buffers and Standards

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