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 (22,947)

Spectroscopy Standards (5,750)

General Chemistry Solutions (5,082)

Matrix Blanks and Standardization Solutions (4,304)

Life Science Buffers (4,124)

Electrochemistry Buffers (2,352)

Environmental Testing Standards (1,889)

Electrochemistry Standards (1,245)

Karl Fischer Buffers and Reagents (466)

Isotope Standards (356)

Viscosity Standards (258)

Quality Control and Proficiency Samples (184)

Kjeldahl Buffers and Reagents (90)

Gel Filtration Standards (59)

Matrix Modifiers (29)

Osmolality Standards (13)

Smoke Point Reference (10)

Polarimetric Standards (6)

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Grade

AAS (55)
AAS Standard (11)
ACS (55)
ACS Reagent (24)
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 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

3,661 – 3,675 of 43,825 results

3,661

Hydrogen chloride, 1M solution in ethyl acetate

CAS: 7647-01-0 | ClH | 36.46 g/mol

Pricing & Availability

3,662

Trimethylamine, 1M solution in THF, AcroSeal™

CAS: 75-50-3 | C3H9N | 59.11 g/mol

Pricing & Availability
Specifications

Linear Formula	N(CH₃)₃
Molecular Weight (g/mol)	59.11
ChEBI	CHEBI:18139
Color	Colorless to Yellow
Physical Form	Liquid
Chemical Name or Material	Trimethylamine
SMILES	CN(C)C
Concentration	1M, exact strength on the certificate of analysis
InChI Key	GETQZCLCWQTVFV-UHFFFAOYSA-N
Density	0.8500g/mL
PubChem CID	1146
Name Note	1M solution in THF
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. 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. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Wear protective gloves/protective clothing/eye protection/face protection.
MDL Number	MFCD00008327
Health Hazard 2	GHS H Statement Highly flammable liquid and vapor. Causes serious eye damage. May cause respiratory irritation. Causes skin irritation. Suspected of causing cancer. Harmful if swallowed. May cause drowsiness or dizziness. May form explosive peroxides.
Flash Point	−17°C
Solubility Information	Solubility in water: soluble. Other solubilities: soluble in most organic solvents
Health Hazard 1	Danger
Synonym	trimethylamine,methanamine, n,n-dimethyl,dimethylmethaneamine,n-trimethylamine,trimethylamine solution,ch3 3n,trimethyl amine,trimethylamin,trimethyl-amine,fema number 3241
Molecular Formula	C3H9N
Formula Weight	59.11
Specific Gravity	0.85

3,663

TraceCERT™ 4-Bromofluorobenzene Solution, 2,000 μg/mL in Methanol, MilliporeSigma™ Supelco™

Pricing & Availability

3,664

1-Methylnaphthalene, ≥98%, MilliporeSigma™ Supelco™

1-Methylnaphthalene is classified under the class of volatile organic compounds (VOCs).

Pricing & Availability

3,665

(±)-Epichlorohydrin, ≥99.9% (GC), MilliporeSigma™ Supelco™

Epichlorohydrin (ECH) is a colorless, volatile and highly reactive organic compound which is utilized as a precursor in the production of glycerol, plastics, drugs and paints.

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3,666

Cyclohexene, ≥99.7% (GC), MilliporeSigma™ Supelco™

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3,667

PESTANAL™ 4-Chloroaniline, MilliporeSigma™ Supelco™

4-Chloroaniline is a chlorinated aromatic amines, which can generally find applications in industry in the production of cosmetics, dyes, herbicides and pharmaceutical products. It is also a major metabolite of the phenyl-urea herbicides.

Pricing & Availability

3,668

PESTANAL™ Ethion, MilliporeSigma™ Supelco™

Pricing & Availability

3,669

PESTANAL™ Bromacil, MilliporeSigma™ Supelco™

Bromacil is an active ingredient of the commercially marketed pesticide, Krovar, widely used for weed control in citrus orchards.

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3,670

TraceCERT™ 4-Bromofluorobenzene Solution, 25,000 μg/mL in Methanol, MilliporeSigma™ Supelco™

Pricing & Availability

3,671

TraceCERT™ Benzo[j]fluoranthene Solution, 2,000 μg/mL in dichloromethane, MilliporeSigma™ Supelco™

Benzo[j]fluoranthene is a polycyclic aromatic hydrocarbon, which is carcinogenic in nature and can be generated into the environment via combustion of coal, coal tar and petroleum products.

Pricing & Availability

3,672

TraceCERT™ Bis(2-ethylhexyl) phthalate Solution, 2,000 μg/mL in Methanol, MilliporeSigma™ Supelco™

Bis(2-ethylhexyl) phthalate belongs to the class of phthalate esters, released in the environment through volatilization and leaching from plastics and other sources. It is extensively used as an additive for the manufacturing of polyvinyl chloride (PVC) plastics.

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3,673

PESTANAL™ Alachlor, MilliporeSigma™ Supelco™

Pricing & Availability

3,674

Di-n-octyl phthalate, MilliporeSigma™ Supelco™

Di-n-octyl phthalate (DNOP) is a mixed component of C6-C10 linear-chain phthalates which has the ability to impart flexibility in plastics and rubber materials. It is also used as plasticizer in PVC used in flooring and carpet tiles.

Pricing & Availability

3,675

TraceCERT™ Valeraldehyde-DNPH, MilliporeSigma™ Supelco™

Pricing & Availability

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