Specifications

Complete compatibility specifications for PTFE microwave digestion vessels. Items marked Customizable available upon request.

Request custom specs

Series I

Position Count	Capacity (ml)	Type
6 / 10 position	50	Main / Standard
12 position	50	Main / Standard
41 position	50	Main / Standard
44 position	80	Main / Standard

Series II

Position Count	Capacity (ml)	Type
40 position	55	Main / Standard
24 position	100	Main / Standard
24 position	110	Main / Standard

Series III

Position Count	Capacity (ml)	Type
15 / 16 / 18 position	100	Main / Standard
6 / 8 position	100	Main / Standard
24 / 40 position	70	Main / Standard

Series IV

Position Count	Capacity (ml)	Type
6 position	100	Main / Standard
10 position	100	Main / Standard
15 / 16 position	100	Main / Standard
40 position	100	Main / Standard

Series V

Position Count	Capacity (ml)	Type
12 position	50	Main / Standard
41 position	56	Main / Standard
24 position	80	Main / Standard
8 position	100	Main / Standard
16 position	100	Main / Standard

Series VI

Position Count	Capacity (ml)	Type
36 position	50	Standard (graphite digestion)

Other brands and custom specifications available upon request.

📌 Customization Options:
• Material: PTFE (standard) / TFM (premium — lower leaching, higher temperature)
• Brand Compatibility: confirm your digester brand and model before ordering
• Vessel Type: Main vessel (pressure monitoring) / Standard vessel
• Other brands and custom specifications available — consult our technical team

Product Description

I. Overview

The PTFE microwave digestion vessel is precision-machined from high-purity PTFE or modified PTFE (TFM) specifically for microwave digestion systems. The vessel offers exceptional chemical resistance, high-temperature/ high-pressure tolerance, and ultra-low metal leaching — making it the essential consumable for ICP-MS, ICP-OES, and AAS trace analysis sample preparation.

Compatible with major microwave digestion systems — with main vessel (pressure monitoring) and standard vessel options. The vessels are fully compatible with original instrument interfaces for easy installation.

TFM material (modified PTFE) offers higher temperature resistance, better mechanical strength, and lower metal leaching than standard PTFE — making it the preferred choice for high-end trace analysis.

II. Core Performance Parameters

Purity: High-purity PTFE / TFM with ultra-low metal leaching (Pb, U < 0.01ppb)
Operating Temperature: -196℃ ~ 260℃ (PTFE) / up to 280℃ (TFM)
Chemical Resistance: Resistant to HF, aqua regia, concentrated H₂SO₄, HNO₃, strong alkalis, organic solvents
Surface: Non-stick, low friction, minimal sample residue
Brand Compatibility: confirm your digester brand and model before ordering
Sizes: 50ml / 80ml / 100ml / 110ml

III. Material & Workmanship

Manufactured from imported high-purity PTFE or TFM resin using precision molding or machining in cleanroom environments — smooth inner and outer walls, bubble-free, crack-free, ensuring structural integrity under extreme microwave digestion conditions.

TFM (modified PTFE) retains all the chemical inertness of PTFE while offering higher temperature resistance and mechanical strength for more demanding digestion applications.

Each product undergoes rigorous visual and dimensional inspection to ensure precise instrument compatibility.

Applications

Typical Applications

Environmental Sample Digestion

Water, soil, sediment, solid waste heavy metal analysis

Food & Agricultural Digestion

Trace element and heavy metal analysis in food and agricultural products

Geological & Mineral Digestion

Elemental analysis of rocks, minerals, and ores

Pharmaceutical Digestion

Elemental impurity analysis of drug substances and products

Semiconductor Digestion

Trace metal analysis of high-purity chemicals and wafer surfaces

Materials Science

Elemental composition analysis of new materials and nanomaterials

Industries

Environmental Monitoring Water quality, soil, solid waste analysis
Food Testing Food safety and agricultural product quality
Pharmaceutical Drug elemental impurity analysis
Geological Exploration Mineral element analysis
Semiconductor High-purity chemical quality control
Research Elemental analysis sample preparation

Chemical	PTFE Compatibility	Recommended Temperature	Notes
Hydrofluoric Acid (HF)	✅ Fully Compatible	≤ 250℃	PTFE is the only reliable material
Aqua Regia	✅ Fully Compatible	≤ 200℃	Avoid extreme high-temperature/high-pressure conditions
Conc. H₂SO₄ (98%)	✅ Fully Compatible	≤ 250℃	Handle with care when heating
Conc. HNO₃ (65%)	✅ Fully Compatible	≤ 250℃	Store away from light
NaOH (50%)	✅ Fully Compatible	≤ 200℃	Safe handling required for concentrated alkalis
Organic Solvents	✅ Fully Compatible	≤ Solvent BP	Ensure ventilation and fire safety

Selection Guide

I. By Digester Brand

Brand	Recommended Vessel	Common Sizes
Series I	50ml Main/Standard	6/10/12/41 position
Series II	55ml / 100ml / 110ml	24/40 position
Series III	70ml / 100ml	6/8/15/16/18/24/40 position
Series IV	100ml	6/10/15/16/40 position
Series V	50ml / 56ml / 80ml / 100ml	8/12/16/24/41 position
Series VI	50ml (graphite)	36 position

II. Main vs Standard Vessel

Main Vessel (monitoring): Equipped with pressure/temperature monitoring interface — higher cost, used for real-time monitoring
Standard Vessel: No monitoring interface — lower cost, used for non-monitoring positions

III. Material Selection

PTFE (standard): Cost-effective, suitable for most digestion applications
TFM (premium): Modified PTFE — lower metal leaching, higher temperature resistance (280℃) — ideal for ultra-trace analysis

💡 Selection Tip: Vessels are not interchangeable between brands — please confirm your instrument brand and model before ordering.
For ultra-trace analysis (ICP-MS level), choose TFM material vessels for the lowest metal leaching.
Typically only 1-2 main vessels are needed per instrument — the rest can be standard vessels.
Replace digestion vessels regularly (typically every 1-2 years) to ensure digestion efficiency and data accuracy.

Operation & Maintenance

User Guide

Standard operating guidelines for PTFE microwave digestion vessels. Proper use and maintenance ensure digestion efficiency and product longevity.

I. Pre-use Preparation

Inspect the vessel for cracks, deformation, and smooth sealing surfaces
Clean with ultrapure water or 10% nitric acid to remove manufacturing residues
Confirm vessel compatibility with your instrument
Check sealing components (if applicable) for integrity

II. Sample Loading & Digestion

Place the weighed sample into the vessel and add the required digestion acid
Seal the vessel with moderate torque — ensure the sealing ring is properly positioned
Load the vessel into the microwave digestion system and set the digestion program
After digestion, allow the vessel to cool to room temperature before removal

III. Cleaning & Maintenance

Rinse with ultrapure water after use — stubborn residues can be soaked in 10% nitric acid
Never use hard brushes or abrasives — may scratch the vessel surface
PTFE's non-stick surface makes cleaning easy
Regularly inspect for aging or cracks — replace damaged vessels promptly

IV. Important Notes

Vessels are brand-specific — do not mix between different instrument brands
Do not exceed rated temperature and pressure conditions
Avoid contact with molten alkali metals (Na, K) and elemental fluorine
Replace digestion vessels regularly (typically every 1-2 years) for optimal results

💡 From a Seasoned Lab Technician: "Accurate acid volume — moderate torque" — Acid volume should be precisely controlled — too much creates excessive pressure, too little results in incomplete digestion. Follow standard methods or instrument manufacturer recommendations.
Do not over-tighten the vessel cap — PTFE is soft and over-tightening can deform the opening or damage the sealing ring. Use a torque wrench for consistent results.
Always cool to room temperature before opening to prevent acid spray from hot pressurized vapor.
Clean immediately after use to prevent residue from drying on the vessel surface.

Care & Notes

Show care & notes

⚠️ Safety & Compliance Checklist

High-Pressure Safety

Pressure inside the vessel can reach several MPa — ensure secure installation

Chemical Safety

All digestion operations must be performed in a fume hood

Thermal Safety

Cool to room temperature before opening — prevent acid spray

PPE

Safety goggles, lab coat, acid/alkali resistant gloves required

Compliance

Follow instrument manufacturer instructions and relevant safety standards

PTFE Microwave Digestion Vessel

Specifications

Series I

Series II

Series III

Series IV

Series V

Series VI

Product Description

I. Overview

II. Core Performance Parameters

III. Material & Workmanship

Applications

Environmental Sample Digestion

Food & Agricultural Digestion

Geological & Mineral Digestion

Pharmaceutical Digestion

Semiconductor Digestion

Materials Science

Selection Guide

I. By Digester Brand

II. Main vs Standard Vessel

III. Material Selection

User Guide

I. Pre-use Preparation

II. Sample Loading & Digestion

III. Cleaning & Maintenance

IV. Important Notes

Care & Notes

High-Pressure Safety

Chemical Safety

Thermal Safety

PPE

Compliance

Need PTFE Microwave Digestion Vessels?

PTFE Microwave Digestion Vessel

Specifications

Series I

Series II

Series III

Series IV

Series V

Series VI

Product Description

I. Overview

II. Core Performance Parameters

III. Material & Workmanship

Applications

Environmental Sample Digestion

Food & Agricultural Digestion

Geological & Mineral Digestion

Pharmaceutical Digestion

Semiconductor Digestion

Materials Science

Selection Guide

I. By Digester Brand

II. Main vs Standard Vessel

III. Material Selection

User Guide

I. Pre-use Preparation

II. Sample Loading & Digestion

III. Cleaning & Maintenance

IV. Important Notes

Care & Notes

High-Pressure Safety

Chemical Safety

Thermal Safety

PPE

Compliance

Related Products

COD Digestion Tube

Hydrothermal Reactor

Waste Liquid Tank

PTFE Crucible

Need PTFE Microwave Digestion Vessels?