Carbon Sulphur Crucibles 528-018 Eltra 90150 Horiba 905.200.380.001 Ceramic Crucible for Carbon/Sulfur Analyzer

Who We Are?

We are...

The trusted supplier of Carbon Sulfur Crucibles for Bruker/Elementar/Baosteel/CKIC/SGS/NCS.

And...

The major leader in the manufacturing standards of carbon-sulfur crucibles industry in China.

Also...

The leading benchmark for manufacturers of consumables for carbon-sulfur analyzers in China. 

Carbon-Sulfur Crucibles Offered By CSCERAMIC

Information about C/S Crucibles 

Information of Compatible Instrument and its Consumable

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Blogs About C/S crucibles

Blog 2:Effect of Pretreatment Method of Carbon Sulfur Crucible to Carbon/Sulfur Content Test in Steel Sample

Blog 3:Key points of Super Low Carbon Content Analyzing by High Frequency Infrared Carbon Sulfur Analyzer

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Why CSCERAMIC’s Carbon-Sulfur Crucibles You Can Rely On?

Material Selection

Our crucibles are made from chemically inert high-quality ceramic materials, offering excellent thermal stability and corrosion resistance. The primary material used is fused quartz. The selected materials can withstand high temperatures and corrosive environments during carbon-sulfur analysis processes.

Purity Option

Our carbon-sulfur crucibles are available in two types: standard blank value(C% < 5ppm, S% < 5ppm) and ultra-low blank value (C%< 3ppm, S%< 2ppm). The crucibles are free from impurities, ensuring accuracy in carbon-sulfur measurements. Strict quality control measures are implemented during the manufacturing process to achieve the required levels of purity.

Design and Dimensions

Our crucibles are designed to perfectly fit models of carbon-sulfur analyzers from brands such as Leco, Eltra, Horiba, and others.

Temperature Resistance

The carbon-sulfur ceramic crucibles possess high temperature resistance and can withstand the high-temperature heating required during the analysis process. The crucibles can maintain their structural integrity and chemical stability without deformation or damage at temperatures as high as 1400°C.

Chemical Compatibility

The carbon-sulfur ceramic crucibles are chemically compatible with the substances and reagents used in carbon-sulfur analysis. They can resist reactions or interactions with common acids, oxidizers, and reducing agents, preserving the integrity of the samples and ensuring accurate results. Our crucibles have successfully passed compatibility tests, demonstrating their resistance to chemical erosion.

Manufacturing Technology

The production of ceramic crucibles involves precise control of manufacturing parameters such as temperature, pressure, and drying conditions through pressing and shaping processes. This ensures consistent quality and dimensional accuracy.

Quality Assurance

We implement stringent quality control measures during the manufacturing process to ensure the reliability and performance of our crucibles. This includes inspection and testing of raw materials, process monitoring, dimension checks, and performance evaluations.

Packaging and Handling

The packaging method has undergone repeated testing to minimize breakage and damage, ensuring that the crucibles are delivered to customers in the best possible condition.

1 .Crucible shall be packed with tin foil or pure aluminum white paper, and the minimum packing unit shall be 10 pieces for each roll. Rolls should be put into paper packing cases with plastic film as inner liner, and should be arranged in sequence with corrugated paper as the interval between layers, for each case, total quantity should be 1000 pieces.

2 .If the buyer has special requirements for packaging, welcome to contact with our sales.

Other Additional Information You May Be Interested in...

How to clean carbon sulfur crucible

1. Wear protective gloves and safety goggles when handling the crucible.
2. Place the melting pot in a undefined of warm water and add a few drops of detergent.
3. Use a easy brush to remove some residue from the crucible.
4. Wash the crucible with strip irrigate and dry it with a easy cloth.

Recommendation of Pretreatment

Besides raw material and fabrication process, crucible baseline may also from absorption. Before using, influence of water, SO2 and CO2 to analyzing result should be avoided. For this purpose, two methods below are recommended.

Method 1, put carbon sulfur ceramic crucible in high temperature furnace, raise the temperature to 1200℃ and burn it for 2 hours, then take it out and get cooled, put into desiccator for demand (preservation time no longer than 4 hours)

Method 2, put carbon-sulfuric analysis crucible in tube-type crucible furnace, induce pure oxygen (purity 99.% or higher), and burn it no less than 1 hour at 1200℃.

Note: Products without pretreatment can be used directly for occasion that normal carbon sulfur blank value (10ppm) is acceptable. 

Baseline Determination of Carbon sulfur Crucible (Material)

A.1 reagents

A.1.1 pure iron flux: the particle size is less than 1.25mm, and mass fraction of both carbon and broken iron are less than 0.0005%.

A.1.2 vanadium pentoxide: purely analyzed, put it into a muffle furnace at 600℃ for 2 hours before using, and cool it in a dryer for reserve.

A.1.3 tungsten flux: the particle size is 0.4~0.8mm, and mass fraction of sulfur and sulfur are less than 0.001% and 0.0005% respectively.

A.1.4 ceramic crucible: use a ceramic crucible of good quality, burn it 4 hours at 1200℃ in a muffle furnace before using, then cool it overnight in the furnace and take it out after cooling down to room temperature in the dryer for reserve.

A.1.5 oxygen: high purity (higher than 99.5%)

A.2 instruments

A2.1 high frequency infrared sulfur analyzer: sensitivity 0.00001%

A.3 steps of analysis

A.3.1 Sample: Grind the "dedicated crucible for sulfur analysis" to less than 0.15mm with an agate mortar and roast it at 105-110℃ for 2h, then take it out and cool down to room temperature in a dryer for reserve.

A.3.2 render crucible (secondary crucible): Add 1 gram pure iron flux (A.1.1) and 1 gram tungsten flux (A.1.3) to a ceramic crucible treated as step A.1.4. Put the crucible in high-frequency induction furnace of infrared carbon crucible analyzer, aerate oxygen and heat it with analysis program. Take it down after the analysis is completed, after slightly cooled, then put it in a dryer (check and confirm no cracks) to cool it down to room temperature for reserve.

A.3.3 instrument calibration

Weigh standard sample 1.000 gram (C:0.00xx%, S:0.000xx% or C:0.000xx%, S: 0.0000xx%) and put it in render crucible. Add 1 gram pure iron flux (A.1.1) and 0.6 gram vanadium pentoxide (A.1.2) and input the mass value of weighed standard sample into the instrument mass compensator. Start analysis, repeat measurement for three times, and take the average value for instrument calibration.

A.3.4 measurement (baseline value of crucible material)

Accurately weigh 1.000 gram standard sample and put it in the bottom of render crucible and add 1 gram pure iron flux (A.1.1) and 0.6 gram vanadium pentoxide (A.1.2), and input the mass value of weighed standard sample into the instrument mass compensator. Complete the analysis, carbon and sulfur value given by the instrument is baseline value of the crucible material.

A.3.5 measurement (baseline value of crucible)

Take a pretreated ceramic crucible (or ceramic crucible without any pretreatment) and place it on an electronic balance. After getting the net weight, add 1 gram pure iron flux (A.1.1) and 0.6 gram vanadium pentoxide (A.1.2), and input mass value of 1.000 gram into the instrument mass compensator. Complete the analysis, carbon and sulfur value given by the instrument is baseline value of the crucible.