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Specifications:
| Application | Analytical Chemistry | ||
| Storage Temperature | Room Temperature | ||
| Product Type | Laboratory Chemical | Forms | Tablets |
| Product Brand | VWR | ||
| Product Grade | Analytical grade | ||
Kjeldahl Digestion Catalysts | VWR® Ready-to-Use Tablets
VWR® Kjeldahl Tablets are high-performance digestion catalysts formulated for use in the Kjeldahl method of nitrogen determination. Manufactured to support safe, rapid, and reproducible sulfuric acid digestion, these tablets are widely applied in analytical workflows across food, agriculture, environmental, and industrial sectors. The tablet form offers precise, consistent dosing and convenient handling compared to powder-form catalysts.
Product Attributes
- Ready-to-use solid tablet form for consistent catalyst delivery
- Supports the digestion phase of Total Kjeldahl Nitrogen (TKN) analysis
- Available in mercury- and selenium-free formulations for safer operation
- Wide range of formulations tailored to specific matrix types and digestion speeds
- Suitable for high-throughput laboratories using manual or automated Kjeldahl setups
Applications
- Protein and total nitrogen analysis in food and beverage testing
- Agricultural fertilizer and soil nitrogen content evaluation
- Environmental testing of wastewater, sludge, and organic effluents
- Determination of nitrogenous compounds in pharmaceutical and chemical samples
Available Formulations
| Catalog Number | Name / Composition | Tablet Mass | Composition Summary | Pack Size |
|---|---|---|---|---|
| 85539.1000 | Kjeldahl Catalyst, Hg/Se-Free | 3.5 g | K₂SO₄, Na₂SO₄, CuSO₄, TiO₂ | 1,000 tablets |
| 85540.1000 | Kjeldahl Catalyst, Hg/Se-Free | 5.0 g | K₂SO₄, Na₂SO₄, CuSO₄, TiO₂ | 1,000 tablets |
| 85541.1000 | Catalyst Missouri | 5.0 g | K₂SO₄, Na₂SO₄, CuSO₄ | 1,000 tablets |
| 85542.1000 | Catalyst Wieninger | 3.5 g | Na₂SO₄, CuSO₄, Se | 1,000 tablets |
| 85543.1000 | Catalyst Wieninger | 5.0 g | Na₂SO₄, CuSO₄, Se | 1,000 tablets |
| 85544.1000 | Catalyst PS | 5.0 g | K₂SO₄ only | 1,000 tablets |
| 85525.1000 | Catalyst CX | 5.5 g | K₂SO₄, CuSO₄·5H₂O | 1,000 tablets |
| 85526.1000 | Catalyst CT | 5.3 g | K₂SO₄, CuSO₄·5H₂O, TiO₂ | 1,000 tablets |
| 85527.1000 | Catalyst C | 5.1 g | K₂SO₄, CuSO₄·5H₂O | 1,000 tablets |
| 85528.1000 | Catalyst TCT | 3.71 g | K₂SO₄, CuSO₄·5H₂O, TiO₂ | 1,000 tablets |
| 85529.1000 | Catalyst CK | 3.9 g | K₂SO₄, CuSO₄·5H₂O | 1,000 tablets |
| 85530.1000 | Catalyst ST | 3.5 g | K₂SO₄, Se | 1,000 tablets |
| 85531.1000 | Catalyst CTQ | 1.59 g | K₂SO₄, CuSO₄·5H₂O, TiO₂ | 1,000 tablets |
| 85532.1000 | Catalyst Antifoam | 1.0 g | Na₂SO₄, Silicon antifoam | 1,000 tablets |
| 85533.1000 | Catalyst NAS | 1.05 g | Na₂SO₄, Se | 1,000 tablets |
| 85534.1000 | Catalyst S | 5.005 g | K₂SO₄, Se | 1,000 tablets |
| 85535.1000 | Catalyst KS | 5.0 g | K₂SO₄, Se | 1,000 tablets |
| 85536.1000 | Catalyst W K150 | 5.0 g | K₂SO₄, CuSO₄·5H₂O, Se | 1,000 tablets |
| 85537.1000 | Catalyst IB61 | 5.0 g | K₂SO₄, CuSO₄·5H₂O, Se | 1,000 tablets |
| 85538.1000 | Catalyst AB04 | 5.025 g | K₂SO₄, CuSO₄·5H₂O | 1,000 tablets |
Key Advantages
- Enables efficient sulfuric acid digestion under controlled conditions
- Reduces variability and improves safety compared to loose powder catalysts
- Mercury-free and selenium-free options available for environmentally conscious laboratories
- Compatible with standard Kjeldahl digestion and distillation units
Compliance and Handling
Each formulation is supplied with a Certificate of Analysis and SDS. Selection of appropriate catalyst should be based on matrix type, digestion speed, and environmental requirements.
- Tablets Description & Composition: Kjeldahl Catalyst free of mercury and selenium, 3.5 g; Contains K₂SO₄, 23.10%; Na₂SO₄, 69.30%; CuSO₄, 1.80%; TiO₂, 2.80% Kjeldahl Catalyst free of mercury and selenium, 5.0 g; Contains K₂SO₄, 23.10%; Na₂SO₄, 69.30%; CuSO₄, 1.80%; TiO₂, 2.80% Kjeldahl Catalyst Missouri, 5.0 g; Contains K₂SO₄, 48.40%; Na₂SO₄, 48.30%; CuSO₄, 0.30% Kjeldahl Catalyst Wieninger, 3.5 g; Contains Na₂SO₄, 96.25%; CuSO₄, 1.50%; Se, 1.50% Kjeldahl Catalyst Wieninger, 5.0 g; Contains Na₂SO₄, 96.25%; CuSO₄, 1.50%; Se, 1.50% Kjeldahl Catalyst PS, 5.0 g; Contains K₂SO₄ Kjeldahl Catalyst CX, 5.5 g; Contains K₂SO₄, 5 g; CuSO₄-5H₂O, 0.5 g Kjeldahl Catalyst CT, 5.3 g; Contains K₂SO₄, 5 g; CuSO₄-5H₂O, 0.15 g; TiO₂, 0.15 g Kjeldahl Catalyst C, 5.1 g; Contains K₂SO₄, 5 g; CuSO₄-5H₂O, 01 g Kjeldahl Catalyst TCT, 3.71 g; Contains K₂SO₄, 3.5 g; CuSO₄-5H₂O, 0.105 g; TiO₂, 0.105 g Kjeldahl Catalyst CK, 3.9 g; Contains K₂SO₄, 3.5 g; CuSO₄-5H₂O, 0.4 g Kjeldahl Catalyst ST, 3.5 g; Contains K₂SO₄, 3.5 g; Se, 0.0035 g Kjeldahl Catalyst CTQ, 1.59 g; Contains K₂SO₄, 1.5 g; CuSO₄-5H₂O, 0.045 g; TiO₂, 0.045 g Kjeldahl Catalyst Antifoam, 1.0 g; Contains Na₂SO₄, 0.97 g; silicon-antifoam, 0.03 g Kjeldahl Catalyst NAS, 1.05 g; Contains Na₂SO₄, 1 g; Se, 0.05 g Kjeldahl Catalyst S, 5.005 g; Contains K₂SO₄, 5 g; Se, 0.005 g Kjeldahl Catalyst KS, 5.05 g; Contains K₂SO₄, 4.9505 g; Se, 0.0495 g Kjeldahl Catalyst W K150, 5.0 g; Contains K₂SO₄, 4.875 g; CuSO₄-5H₂O, 0.075 g; Se, 0.050 g Kjeldahl Catalyst IB61, 5.0 g; Contains K₂SO₄, 4,673 g; CuSO₄-5H₂O, 0.281 g; Se, 0.046 g Kjeldahl Catalyst AB04, 5.025 g; Contains K₂SO₄, 5 g; CuSO₄-5H₂O, 0.025 g
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Customer Review
January 18 2024
Richard Atule - bought VWR Kjeldahl catalyst, tablets
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