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Kjeldahl Buffers and Reagents

Kjeldahl Buffers and Reagents

Buffers and reagents intended for use with the Kjeldahl method; the Kjeldahl method is an analytical chemistry procedure used for the quantitative determination of nitrogen contained in organic substances, ammonia and ammonium.
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1 – 15 of 70 results
1

Kjel-Sorb™ Solution (Certified), Fisher Chemical™

CAS: 7732-18-5,10043-35-3 Molecular Formula: BH3O3 Molecular Weight (g/mol): 61.83 MDL Number: MFCD00011337 InChI Key: KGBXLFKZBHKPEV-UHFFFAOYSA-N PubChem CID: 7628 ChEBI: CHEBI:33118 IUPAC Name: boric acid SMILES: OB(O)O

EDGE
PubChem CID 7628
CAS 7732-18-5,10043-35-3
Molecular Weight (g/mol) 61.83
ChEBI CHEBI:33118
MDL Number MFCD00011337
SMILES OB(O)O
IUPAC Name boric acid
InChI Key KGBXLFKZBHKPEV-UHFFFAOYSA-N
Molecular Formula BH3O3
2

FisherTab™ MT-37 Kjeldahl Tablets, Fisher Chemical

Composition per tablet: 3.5g K2SO4 + 0.175g HgO

CAS 21908-53-2
MDL Number MFCD03456795
Chemical Name or Material FisherTab™ MT-37 Kjeldahl Tablets
Assay Percent Range 95%
3

FisherTab™ TT-43 Kjeldahl Tablets, Fisher Chemical

Composition per tablet: 4.18g K2SO4 + 0.0025g CuSO4 + 0.15g TiO2

CAS 13463-67-7
MDL Number MFCD00010981
Chemical Name or Material FisherTab™ TT-43 Kjeldahl Tablets
Assay Percent Range 96%
4

FisherTab™ ST-AUTO Kjeldahl Tablets, Fisher Chemical

Composition per tablet: 1.5g K2SO4 + 0.015g Se

CAS 7782-49-2
MDL Number MFCD03456802
Chemical Name or Material FisherTab™ ST-AUTO Kjeldahl Tablets
Assay Percent Range 99%
5

FisherTab™ TT-35 Kjeldahl Tablets, Fisher Chemical

Composition per tablet: 3.5g K2SO4 + 0.1g CuSO4 + 0.1g TiO2

CAS 13463-67-7
MDL Number MFCD00010981
Chemical Name or Material FisherTab™ TT-35 Kjeldahl Tablets
Assay Percent Range 94%
6

FisherTab™ ST-35 Kjeldahl Tablets, Fisher Chemical

Composition per tablet: 3.5g K2SO4 + 0.35g Se

CAS 7782-49-2
MDL Number MFCD03456801
Chemical Name or Material FisherTab™ ST-35 Kjeldahl Tablets
Assay Percent Range 99%
7

FisherTab™ TT-50 Kjeldahl Tablets, Fisher Chemical

Composition per tablet: 5g K2SO4 + 0.1g CuSO4 + 0.1g TiO2

CAS 13463-67-7
MDL Number MFCD00010981
Chemical Name or Material FisherTab™ TT-50 Kjeldahl Tablets
Assay Percent Range 94%
8

FisherTab CT-AUTO Kjeldahl Tablets, Fisher Chemical

Composition per tablet: 1.5g K2SO4 + 0.15g CuSO4

CAS 7778-80-5
MDL Number MFCD00010981
Chemical Name or Material FisherTab™ CT-AUTO Kjeldahl Tablets
Assay Percent Range 93%
9

FisherTab™ CT-50 Kjeldahl Tablets, Fisher Chemical

Composition per tablet: 5g K2SO4 + 0.15g CuSO4

CAS 7778-80-5
MDL Number MFCD00010981
Chemical Name or Material FisherTab™ CT-50 Kjeldahl Tablets
Assay Percent Range 97%
10

FisherTab™ CT-37 Kjeldahl Tablets, Fisher Chemical

Composition per tablet: 3.5g K2SO4 + 0.4g CuSO4

CAS 7778-80-5
MDL Number MFCD00010981
Chemical Name or Material FisherTab™ CT-37 Kjeldahl Tablets
Assay Percent Range 90%
11

BUCHI Activated Charcoal, 150 g
SDP

For the adsorption stage of the scrubber, holds back particles and enables the aerosols to recondensate.

12

BUCHI Boric Acid with Sher Indicator, pH 4.65
SDP

Boric Acid with Sher Indicator, pH adjusted to 4.65 ± 0.15 for pH or colorimetric titration.

CAS 76-60-8
Molecular Weight (g/mol) 61.83
Packaging Plastic Bottle
Chemical Name or Material Boric Acid with Sher Indicator
Quantity 5 L
Synonym Orthoboric Acid
Molecular Formula BH3O3
13

Sodium Hydroxide, For Kjeldahl Nitrogen, Certified, 40.0% (w/w) ±0.4% (w/w), LabChem™

CAS: 1310-73-2 Molecular Formula: HNaO Molecular Weight (g/mol): 39.997 InChI Key: HEMHJVSKTPXQMS-UHFFFAOYSA-M Synonym: Caustic Soda PubChem CID: 14798 ChEBI: CHEBI:32145 IUPAC Name: sodium;hydroxide SMILES: [OH-].[Na+]

PubChem CID 14798
CAS 1310-73-2
Molecular Weight (g/mol) 39.997
ChEBI CHEBI:32145
SMILES [OH-].[Na+]
Synonym Caustic Soda
IUPAC Name sodium;hydroxide
InChI Key HEMHJVSKTPXQMS-UHFFFAOYSA-M
Molecular Formula HNaO
14

BUCHI Kjeldahl Tablets
SDP

Digestion aids for nitrogen determination.

Percent Purity Mixture
Packaging Plastic Container
Quantity 1000 Pk.
15

Digestion Reagent, with Mercury Catalyst, Ricca Chemical
SDP

For Analysis of Nitrogen (Kjeldahl)

Name Note With Mercury Catalyst
CAS 21908-53-2
Color Colorless
Physical Form Liquid
Packaging Natural Poly Bottle
CAS Min % 0.13
Chemical Name or Material Digestion Reagent
CAS Max % 0.14