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 (23,986)

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Matrix Modifiers (29)

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Grade

AAS (66)
ACS (56)
ACS Reagent (25)
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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 (469)
Buffer, Storage (4)
Calibration (8)
Cleaning, Storage, pH Buffer (15)
Colored pH Buffer (35)

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Search Within Results

871 – 885 of 44,315 results

871

Sodium Sulfide, 5% (w/v), Ricca Chemical

CAS: 1313-84-4 Molecular Formula: H18Na2O9S Molecular Weight (g/mol): 240.17 MDL Number: MFCD00149184 InChI Key: ZGHLCBJZQLNUAZ-UHFFFAOYSA-N IUPAC Name: disodium nonahydrate sulfanediide SMILES: O.O.O.O.O.O.O.O.O.[Na+].[Na+].[S--]

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Specifications

CAS	1313-84-4
Molecular Weight (g/mol)	240.17
MDL Number	MFCD00149184
SMILES	O.O.O.O.O.O.O.O.O.[Na+].[Na+].[S--]
IUPAC Name	disodium nonahydrate sulfanediide
InChI Key	ZGHLCBJZQLNUAZ-UHFFFAOYSA-N
Molecular Formula	H18Na2O9S

872

Potassium hydrogen iodate, primary standard, ACS, 99.95-100.05%

CAS: 13455-24-8 Molecular Formula: HI2KO6 Molecular Weight (g/mol): 389.909 MDL Number: MFCD00011400 InChI Key: ACAYDTMSDROWHW-UHFFFAOYSA-M PubChem CID: 23700942 IUPAC Name: potassium;iodic acid;iodate SMILES: OI(=O)=O.[O-]I(=O)=O.[K+]

Pricing & Availability
Specifications

PubChem CID	23700942
CAS	13455-24-8
Molecular Weight (g/mol)	389.909
MDL Number	MFCD00011400
SMILES	OI(=O)=O.[O-]I(=O)=O.[K+]
IUPAC Name	potassium;iodic acid;iodate
InChI Key	ACAYDTMSDROWHW-UHFFFAOYSA-M
Molecular Formula	HI2KO6

873

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Thermo Scientific Chemicals CHES, 99%

CAS: 103-47-9 Molecular Formula: C8H17NO3S Molecular Weight (g/mol): 207.288 MDL Number: MFCD00003835 InChI Key: MKWKNSIESPFAQN-UHFFFAOYSA-N Synonym: 2-(Cyclohexylamino)ethanesulfonic acid PubChem CID: 66898 IUPAC Name: 2-(cyclohexylamino)ethanesulfonic acid SMILES: C1CCC(CC1)NCCS(=O)(=O)O

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Specifications

PubChem CID	66898
CAS	103-47-9
Molecular Weight (g/mol)	207.288
MDL Number	MFCD00003835
SMILES	C1CCC(CC1)NCCS(=O)(=O)O
Synonym	2-(Cyclohexylamino)ethanesulfonic acid
IUPAC Name	2-(cyclohexylamino)ethanesulfonic acid
InChI Key	MKWKNSIESPFAQN-UHFFFAOYSA-N
Molecular Formula	C8H17NO3S

874

Sulfur in Heavy Mineral Oil standard solution, Specpure™, 10,000μg/g (1.00%)

MDL Number: MFCD00804270

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Specifications

MDL Number	MFCD00804270

875

Organic Carbon Standard, 5000 ppm C, Ricca Chemical

CAS: 7732-18-5 Molecular Formula: C8H5KO4 Molecular Weight (g/mol): Mixture 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
Molecular Weight (g/mol)	Mixture
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

876

Conductivity Standard, 10,000 μS/cm (10 mS/cm) at 25°C, Ricca Chemical

5400 ppm TDS as NaCl

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Specifications

Boiling Point	100°C
Type	Conductivity Standard
Name Note	10mS/cm ((10, 000μmho/cm) at 25°C, 5400ppm as NaCl
Concentration or Composition (by Analyte or Components)	5400ppm as NaCl
CAS	7732-18-5
Color	Colorless
Physical Form	Liquid
CAS Min %	0.53
Chemical Name or Material	Conductivity/TDS Standard
Solution Type	Conductivity Standard
CAS Max %	0.55

877

Yttrium, plasma standard solution, Specpure™ Y 10μg/mL

MDL Number: MFCD00011468

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Specifications

MDL Number	MFCD00011468

878

Iron, plasma standard solution, Specpure™ Fe 10,000μg/mL

MDL Number: MFCD00010999

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Specifications

MDL Number	MFCD00010999

879

Buffer Solution pH 9.0 at 25°C, Certified, LabChem™

Pricing & Availability
Specifications

Linear Formula	KCl
Color	Colorless
Traceability to NIST	Traceable to NIST
Physical Form	Liquid
Chemical Name or Material	Buffer Solution pH 9.0 at 25°C
Grade	Certified
Identification	Passes Test
CAS	1310-73-2
Decomposition Information	Boron; Hydrogen chloride
Health Hazard 2	GHS H Statement May damage fertility or the unborn child.
Solubility Information	Soluble in water
pH	9.00 ±0.01
Health Hazard 1	Danger
Recommended Storage	Room Temperature
Formula Weight	74.55
CAS Max %	0.05

880

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Thermo Scientific Chemicals Phenolphthalein, 2% soln. in 95% ethanol

CAS: 77-09-8 Molecular Formula: C20H14O4 Molecular Weight (g/mol): 318.33 MDL Number: MFCD00005913 InChI Key: KJFMBFZCATUALV-UHFFFAOYSA-N Synonym: phenolphthalein,phthalimetten,euchessina,phthalin,espotabs,phenolax,purgophen,koprol,laxogen,trilax PubChem CID: 4764 ChEBI: CHEBI:34914 IUPAC Name: 3,3-bis(4-hydroxyphenyl)-2-benzofuran-1-one SMILES: OC1=CC=C(C=C1)C1(OC(=O)C2=CC=CC=C12)C1=CC=C(O)C=C1

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Specifications

PubChem CID	4764
CAS	77-09-8
Molecular Weight (g/mol)	318.33
ChEBI	CHEBI:34914
MDL Number	MFCD00005913
SMILES	OC1=CC=C(C=C1)C1(OC(=O)C2=CC=CC=C12)C1=CC=C(O)C=C1
Synonym	phenolphthalein,phthalimetten,euchessina,phthalin,espotabs,phenolax,purgophen,koprol,laxogen,trilax
IUPAC Name	3,3-bis(4-hydroxyphenyl)-2-benzofuran-1-one
InChI Key	KJFMBFZCATUALV-UHFFFAOYSA-N
Molecular Formula	C20H14O4

881

Thermo Scientific Chemicals PIPES, 1.0M buffer soln., pH 6.8

CAS: 5625-37-6 Molecular Formula: C8H18N2O6S2 Molecular Weight (g/mol): 302.36 MDL Number: MFCD00006159 InChI Key: IHPYMWDTONKSCO-UHFFFAOYSA-N PubChem CID: 79723 ChEBI: CHEBI:44933 IUPAC Name: 2-[4-(2-sulfoethyl)piperazin-1-yl]ethanesulfonic acid SMILES: C1CN(CCN1CCS(=O)(=O)O)CCS(=O)(=O)O

Pricing & Availability
Specifications

PubChem CID	79723
CAS	5625-37-6
Molecular Weight (g/mol)	302.36
ChEBI	CHEBI:44933
MDL Number	MFCD00006159
SMILES	C1CN(CCN1CCS(=O)(=O)O)CCS(=O)(=O)O
IUPAC Name	2-[4-(2-sulfoethyl)piperazin-1-yl]ethanesulfonic acid
InChI Key	IHPYMWDTONKSCO-UHFFFAOYSA-N
Molecular Formula	C8H18N2O6S2

882

Potassium standard solution, for AAS, 1 mg/ml K in 2-5% HNO3

CAS: 7440-09-7 | K | 39.10 g/mol

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883

Sodium standard solution, for AAS, 1 mg/ml Na in 0.5N HNO3

CAS: 7631-99-4 | NNaO3 | 84.99 g/mol

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884

Magnesium standard solution, for AAS, 1 mg/ml Mg in 0.5N HNO3

CAS: 7439-95-4 | Mg | 24.30 g/mol

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885

Borane dimethyl sulfide complex, 2M solution in THF, AcroSeal™

CAS: 13292-87-0 | C2H9BS | 75.96 g/mol

Pricing & Availability
Specifications

Linear Formula	(CH₃)₂S·BH₃
Molecular Weight (g/mol)	75.96
InChI Key	RMHDLBZYPISZOI-UHFFFAOYSA-N
Density	0.8500g/mL
PubChem CID	9833925
Name Note	2M Solution in Tetrahydrofuran
Fieser	04,191; 05,47; 06,64; 08,49; 10,49; 14,52; 17,50
RTECS Number	PV5080000
Formula Weight	75.95
Color	Colorless to Yellow
Physical Form	Solution
Chemical Name or Material	Borane-methyl sulfide complex
SMILES	B.CSC
Merck Index	15, 1336
Concentration	1.80 to 2.20M
CAS	75-18-3
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 skin irritation occurs: Get medical advice/attention. 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	MFCD00013189
Health Hazard 2	GHS H Statement May cause respiratory irritation. Causes skin irritation. Causes serious eye damage. Harmful if swallowed. In contact with water releases flammable gases which may ignite spontaneously. Highly flammable liquid and vapor. May form explosive peroxides. Reacts violently with water. Suspected of causing cancer. May cause drowsiness or dizziness.
Flash Point	−17°C
Solubility Information	Solubility in water: reacts. Other solubilities: soluble in ethyl ether, tetrahydrofurane, hexane,, toluene, methylene chloride and other aprotic, solvents
Health Hazard 1	Danger
Synonym	dimethyl sulfide borane,borane-methyl sulfide complex,borane dimethyl sulfide complex,borane-dimethyl sulfide,dimethyl sulfideborane,dimethyl sulfide trihydroboron,borane-dimethyl sulfide complex,borane methylsulfide,borane dimethylsulfide,borane dms
TSCA	TSCA
IUPAC Name	(methylsulfanyl)methane borane
Molecular Formula	C2H9BS
EINECS Number	236-313-6
Specific Gravity	0.85

Buffers and Standards

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Conductivity Standard, 10,000 μS/cm (10 mS/cm) at 25°C, Ricca Chemical SureTRACESupports traceability with guaranteed access to certificates and proactive change notifications.Learn More

Conductivity Standard, 10,000 μS/cm (10 mS/cm) at 25°C, Ricca Chemical