Import Conradson Method Carbon Residue Tester — Buy in wholesale FOB from Supplier in China
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Conradson Method Carbon Residue Tester
The Conradson Method Carbon Residue Tester is a laboratory instrument designed to determine the carbon residue content of petroleum products according to ASTM D189 and GB/T 268 standards. It uses a controlled combustion method to heat a sample in a crucible under inert conditions, measuring the residual carbon after evaporation and pyrolysis. The device is configured as a single-hole unit with a gas burner, crucible assembly, and protective hood.
The instrument is constructed with stainless steel components for corrosion resistance and long-term durability in high-temperature environments. The burner system is calibrated to maintain a consistent flame height and temperature profile, critical for repeatability. The design follows the conventional Conradson method, where the sample is heated in a crucible with a cover, then cooled before weighing the residue.
This tester is used by petroleum refineries, fuel testing labs, and quality control departments to assess coke formation potential in lubricants, residual fuels, and crude oils. Buyers include national testing institutes, private laboratories, and petrochemical manufacturers. The unit is supplied as a complete system with burner, crucible, hood, and mounting base. Calibration is not included; buyers must arrange for third-party certification after receipt.
| Standard Compliance | ASTM D189, GB/T 268 |
| Test Method | Conradson carbon residue method (closed crucible, controlled pyrolysis) |
| Configuration | Single-hole, manual operation |
| Burner Type | Gas burner with adjustable flame control |
| Crucible Material | Stainless steel, heat-resistant grade |
| Hood Construction | Stainless steel with ventilation outlet |
| Typical Test Temperature Range | Standard method requires heating to 500°C ± 5°C for 30 minutes |
| Typical Sample Volume | Standard sample size is 10 g ± 0.1 g, per ASTM D189 |
| Typical Residue Measurement Precision | Industry standard requires ±0.02% accuracy in residue weight determination |
| Power Requirement | Gas supply only; no electrical power needed for heating |
Changsha Friend Experimental Analysis Instrument Co., Ltd is a manufacturer based in Changsha, Hunan Province, China, producing laboratory instruments for petroleum and chemical testing. The company specialises in combustion-based analyzers, including carbon residue testers and flash point instruments. The listing does not state years of operation, workforce size, or third-party certifications. Response metrics are inactive, indicating no recent buyer interaction.
The supplier does not claim in-house calibration services, ISO 17025 accreditation, or international distribution. Its products appear to be built to meet Chinese and ASTM standards, but no documentation on traceability or calibration certificates is provided. The facility is not described as certified for export compliance beyond general manufacturing registration.
| Business Type | Supplier |
| Year Established | Recently Joined |
| Employees | Contact Supplier |
| Annual Revenue | Contact Supplier |
| Main Products | View Products Tab |
| Major Markets | Global |
| Response Time | <4h |
| Response Rate | New Supplier |
Sourcing Conradson Method Carbon Residue Tester from Changsha Friend Experimental Analysis Instrument Co., Ltd - China Import Guide
Before ordering, confirm that the instrument meets ASTM D189 and GB/T 268 standards with documentation. Verify the crucible material grade and burner calibration method. Request a test report using a reference sample to validate accuracy. Ensure the unit is shipped with all components: burner, hood, crucible, and mounting base.
Lead time is typically 4 to 6 weeks after order confirmation. Incoterms are usually FOB Changsha or CIF port of destination. Payment is often 50% advance with balance before shipment. The instrument is shipped without calibration. Buyers must arrange for on-site calibration by a certified lab upon receipt, using traceable standards.
Inspect the unit for damage and verify all components are present. Test the burner flame stability using a reference fuel. Perform a dry run with a known sample to confirm residue measurement consistency. Retain all documentation including packing list, export declaration, and safety manual. Request a calibration certificate from a third party if required by your regulatory body.
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30 suppliersBuy Conradson Method Carbon R in Bulk — Verified Supplier in China
When sourcing Conradson Method Carbon Residue Tester for your business, securing the right balance of quality and cost is essential. Changsha Friend Experimental Analysis Instrument Co., Ltd, a verified supplier based in China, offers this product for international export. By purchasing directly from the manufacturer or authorized exporter, buyers can negotiate favorable FOB prices starting at $100/Bags and manage bulk orders with a minimum order quantity (MOQ) of 1 Bags. This product is a staple in the Electric Testers sector with strong demand from importing countries worldwide.
Conradson Method Carbon R Specifications, Trade Terms & Pricing
Importing Conradson Method Carbon R requires careful attention to shipping logistics, customs compliance, and secure payment terms. Changsha Friend Experimental Analysis Instrument Co., Ltd offers flexible shipping options such as Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. Common payment methods for international B2B transactions include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P). All transactions and RFQs are facilitated through EximNext, a leading B2B marketplace designed to make cross-border trade secure and efficient.
About Changsha Friend Experimental Analysis Instrument Co., Ltd — Supplier in China
Finding trustworthy partners is the foundation of successful importing. The supplier of this Conradson Method Carbon R has been verified on our platform. Whether you are a distributor, wholesaler, or procurement manager, you can request a free quotation, ask for product samples, and finalize your bulk purchase with confidence. EximNext hosts thousands of verified manufacturers and exporters across 200+ countries. Explore similar products in the Electric Testers category and connect with top-tier exporters on our comprehensive global B2B marketplace. Start your sourcing journey today.
Import Conradson Method Carbon R — Shipping, Logistics & Customs
Importing Conradson Method Carbon R requires careful attention to shipping logistics, customs compliance, and secure payment terms. Common shipping options include Full Container Load (FCL) or Less than Container Load (LCL) via sea freight. Buyers should verify import duties in their destination country. Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), and Documents against Payment (D/P).
Frequently Asked Questions About Conradson Method Carbon R
What is the wholesale price of Conradson Method Carbon Residue Tester?
The current listed wholesale price for Conradson Method Carbon Residue Tester from Changsha Friend Experimental Analysis Instrument Co., Ltd is $100/Bags on FOB terms from China. Prices may vary depending on order volume, packaging, and destination. For the most accurate bulk quote, send a direct RFQ to Changsha Friend Experimental Analysis Instrument Co., Ltd through EximNext.
What is the Minimum Order Quantity (MOQ) for Conradson Method Carbon R?
The supplier, Changsha Friend Experimental Analysis Instrument Co., Ltd, has set a Minimum Order Quantity (MOQ) of 1 Bags for Conradson Method Carbon R. For sample requests or smaller trial orders, contact the supplier directly through our platform's inquiry system.
What is the HS Code for Conradson Method Carbon Residue Tester?
The HS Code classification for Conradson Method Carbon Residue Tester depends on the specific grade and form. Contact Changsha Friend Experimental Analysis Instrument Co., Ltd through EximNext for the exact HS Code and customs documentation required for your destination country.
How can I import Conradson Method Carbon R from China?
To import Conradson Method Carbon R from China, negotiate shipping terms (FOB, CIF, or EXW) directly with Changsha Friend Experimental Analysis Instrument Co., Ltd. Ensure you have the necessary import licenses for Electric Testers products in your destination country.
Is Changsha Friend Experimental Analysis Instrument Co., Ltd a verified supplier?
Yes, Changsha Friend Experimental Analysis Instrument Co., Ltd is a verified supplier on EximNext. You can view their complete company profile, business registration details, certifications, and export history before placing a bulk order.
What are the key specifications of Conradson Method Carbon Residue Tester?
For a complete technical data sheet or Certificate of Analysis (COA), send an inquiry directly to Changsha Friend Experimental Analysis Instrument Co., Ltd through EximNext.
What packaging options are available for bulk orders of Conradson Method Carbon R?
Changsha Friend Experimental Analysis Instrument Co., Ltd offers Conradson Method Carbon R with standard export packaging. Custom packaging, private labeling, and OEM/ODM options may also be available for large wholesale orders.
Which countries import Conradson Method Carbon R the most?
Conradson Method Carbon R is actively imported by buyers worldwide. Request a destination-specific CIF or CFR quote from Changsha Friend Experimental Analysis Instrument Co., Ltd through our platform.
What certifications does this Conradson Method Carbon R supplier hold?
Changsha Friend Experimental Analysis Instrument Co., Ltd maintains international quality certifications. These ensure that the Conradson Method Carbon R meets international quality, safety, and regulatory standards required for cross-border trade.
How do I place a bulk order for Conradson Method Carbon Residue Tester on EximNext?
Click "Request Quotation" on this product page, specify your required quantity, preferred shipping terms, and destination country. Changsha Friend Experimental Analysis Instrument Co., Ltd will respond with a detailed wholesale quote including FOB pricing, lead time, and payment options.
What payment methods are accepted?
Common payment methods include Letter of Credit (L/C), Telegraphic Transfer (T/T), Documents against Payment (D/P), and Escrow services. Confirm accepted terms directly with Changsha Friend Experimental Analysis Instrument Co., Ltd.
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