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Porcelain Combustion Boats
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Chemical Ceramics

Porcelain Combustion Boats

Tube-Furnace Charging Boats · 72mm~97mm · Carbon & Sulfur Analysis

Porcelain combustion boats carry samples in tube furnaces and carbon/sulfur analyzers. Fired from quality hard porcelain, the boats stay straight and dimensionally stable at heat, so pusher charging runs smoothly. Five lengths from 72mm to 97mm fit common analyzer boats holders and tube furnaces.

72 – 97 mmLength
12 – 17 mmWidth
8 – 11 mmHeight
Micro charging, small holders / Common for IR C/S analyzers …Typical Use

Specifications are subject to confirmation with your enquiry.

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Hard Porcelain 72mm~97mm True and Straight Heat Tolerant Instrument Fit

📐 Highlights:
Hard porcelain · five lengths · straight body · C/S analysis · single-use or reusable

  • Material — Hard porcelain, fired for heat duty
  • Length — 72 / 77 / 82 / 88 / 97 mm
  • Body — True and straight for smooth charging
  • Heat — Stable in routine tube-furnace duty
  • Corrosion — Tolerates combustion atmospheres
  • Use — Tube-furnace charging, C/S analysis
We will follow up on your inquiry as soon as possible. Custom sizes supported Samples available
Specifications

Specifications

Typical factory dimensions are listed below. Dimensions are indicative for selection only.

Request custom specs

Combustion Boats

Length (mm)Width (mm)Height (mm)Typical Use
72128Micro charging, small holders
77149Common for IR C/S analyzers
821510Routine tube-furnace charging
881610Larger sample loads
971711High-capacity ignition
Instruments differ in holder sizes; verify holder dimensions before ordering.
📌 Customization:
• Sizes to match your instrument
• Volume pricing for batches
• Holders and pushers available

Product Description

1. Overview

Combustion boats carry samples through tube furnaces and infrared carbon/sulfur analyzers. The hard-porcelain bodies stay flat and resist deformation at temperature, keeping pusher charging smooth and sample positioning accurate.

Five lengths from 72mm to 97mm match common instrument boat holders. Boats may be reused after cleaning or used once: single-use prevents cross-contamination in low-carbon precision analysis, while routine ignition duty allows reuse.

Load samples evenly without overfilling, seat gently in the holder, and let boats cool before removal to avoid cracking.

🔬 Types & Features:
Straight and true — no snagging in pusher charging.
Five lengths — fits mainstream furnaces and analyzers.
Heat stable — dependable in combustion duty.
Flexible use — single-use for precision, reusable for routine.

2. Key Parameters

  • Material: hard porcelain
  • Length: 72 / 77 / 82 / 88 / 97 mm
  • Temperature: routine tube-furnace duty
  • Straightness: smooth charging, no snagging
  • Fit: IR carbon/sulfur analyzers, tube-furnace holders
  • Usage: single-use or cleaned and reused

3. Material & Workmanship

Pressed and sintered from quality ceramic stock with smooth rounded edges. Straightness and dimensions are inspected per batch for reliable holder fit.

For C/S analysis, stock boats in batches together with tongs and drying dishes to complete the charging toolkit.

Applications

Typical Uses

C/S analysis

sample boats for IR analyzers

Tube-furnace charging

atmosphere ignition and reduction runs

Heat treatment

catalyst and inorganic powder ignition

Coal testing

combustion determinations

Industries

  • Steel and metallurgy carbon and sulfur analysis
  • Coal testing total sulfur and ash determinations
  • Materials R&D atmosphere experiments in tube furnaces
  • QC laboratories combustion-based analysis

Selection Guide

Selection by Duty

ApplicationSizeNote
Precision C/S analysis77 mm (common)Follow instrument spec; single-use advised
Routine tube-furnace ignition82~88 mmReusable after cleaning
Larger loads97 mmHigher capacity

💡 Tips: Confirm holder length before ordering.
Single-use boats prevent cross-contamination in low-carbon work.
Burn residues off reused boats before reloading.

Operation & Maintenance

Operation Guide

Standard operating guide for combustion boats.

03

Before Use

  • Inspect for cracks and deformation
  • Burn residues off reused boats and cool
  • Confirm boat size against the instrument
  • Prepare boat tongs or crucible tongs
04

Procedure

  1. Spread the sample in a thin even layer without overfilling
  2. Seat the boat gently in the instrument holder
  3. Push into the hot zone per the instrument program
  4. Allow the boat to cool before removal
  5. Discard single-use boats after the run
  6. Clean, burn off and store reusable boats
05

Cleaning & Care

  • Burn off residues before cleaning reused boats
  • Retire cracked or deformed boats
  • Handle gently to protect edges
  • Store in compartmented dry boxes

💡 Lab veteran tips: Load evenly — thin layers burn completely.
Verify size — check holder length before ordering.
Cool first — red-hot boats crack if mishandled.
Avoid cross-contamination — one boat per run for precision work.

Care & Notes

Show care & notes

⚠️ Safety Notes

Hot handling

use boat tongs and heat-resistant gloves

Atmosphere

confirm compatibility with furnace gas

Disposal

discard single-use boats per lab waste rules

Do not
  • No quenching: never touch red-hot boats to cold metal

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Need Porcelain Combustion Boats?

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Porcelain Combustion BoatsLength 72 – 97 mm Get a Quote