Product Description

1. Overview

The PTFE Beaker with Lid belongs to our PTFE vessel range and is mainly used for holding aggressive media, trace-analysis samples and non-stick materials. Standard sizes cover 30ml~2000ml. Typical in trace metal work, digestion and ultra-pure reagent handling.

The body is made of polytetrafluoroethylene (PTFE); highest chemical inertness among common plastics, virtually no swelling or leaching. It works between -196℃ to 260℃, short-term up to 300℃; chemically it resists hydrofluoric acid, aqua regia, concentrated sulfuric and nitric acid, strong alkali and organic solvents; only molten alkali metals and elemental fluorine attack it; very low surface energy, non-stick, minimal sample retention. Surface condition and residue are easy to verify, so cleaning completeness is obvious.

When selecting, confirm medium, temperature and connection first, then fix the size: the medium decides the material, the temperature decides whether heating or autoclaving is possible, and the connection decides whether it mates with existing apparatus. For duties outside the normal range — hot concentrated alkali, fluoride media, vacuum or repeated thermal cycling — our engineers can confirm a suitable option.

2. Key properties

Material: polytetrafluoroethylene (PTFE)
Working temperature: -196℃ to 260℃, short-term up to 300℃
Chemical resistance: resists hydrofluoric acid, aqua regia, concentrated sulfuric and nitric acid, strong alkali and organic solvents; only molten alkali metals and elemental fluorine attack it
Surface: very low surface energy, non-stick, minimal sample retention
Sterilisation: autoclavable (121℃), dry-heat or chemically sterilizable
Size range: 30ml~2000ml

3. Manufacturing and inspection

Parts are compression or isostatic moulded from virgin PTFE resin, sintered in a stepped heating cycle; sealing faces finish-machined then lapped, keeping items of the same size interchangeable. Work is carried out at controlled stations to prevent scratches and cross-contamination.

Each item is checked for appearance, dimensions and fit before dispatch; sampling covers capacity or graduation deviation, joint fit and wall uniformity. Items from the same batch stay consistent in size and feel, which simplifies central storage and reordering. Inspection records and batch information are available with the goods.

Applications

Typical applications

aggressive chemicals and high-temperature digestion

Handles corrosion-resistant containment and digestion in aggressive chemicals and high-temperature digestion and is a common supporting item in such workflows.

Routine preparation and sampling

Suited to solution preparation and sample transfer in daily work.

Incoming and batch comparison

Used for incoming checks and batch-to-batch consistency comparison.

Teaching and training

Straightforward structure and low operating threshold suit demonstrations and onboarding.

Transfer during sample prep

Carries material between weighing, dissolving, transfer and make-up, cutting cross-contamination and losses.

Method and workflow validation

In method development it supports replicate runs with one consistent vessel format, reducing systematic error.

Selection Guide

Choose by duty

Duty first, size second

Define the handling method, contact medium and temperature range before choosing material and interface.

Interface must match

Confirm the interface form before pairing with other apparatus; mismatches leak or will not assemble.

Material by medium

Choose material according to the contact medium and operating temperature; refer to the specification block.

Special requirements on request

Non-standard sizes, special interfaces or volume customisation are quoted separately.

Size versus throughput

Match size to the volume per run and the number of runs a day; oversize vessels add cleaning load, undersize ones force repeated batches.

Reading accuracy needed

Choose graduated or single-mark items when accurate metering matters; skip the accuracy premium for rough transfer work.

Service condition guide

Condition	Suitability	Notes
Ambient or hot storage	Suitable	strong acids, alkalis and organic solvents for long contact
Heating and high temperature	Suitable	-196℃ to 260℃, up to 300℃ short-term
Direct flame	Not suitable	decomposes above 300℃ releasing harmful fumes
Vacuum service	Suitable	the material is inert; sealing depends on the design
Hydrofluoric acid / fluorides	Suitable	one of the few materials that resists HF
Strong oxidizing media	Suitable	resists aqua regia, concentrated sulfuric and nitric acid
Autoclaving	Conditional	121℃ is fine, but repeated cycles accelerate ageing
Trace metal analysis	Suitable	low leaching, suited to trace and ultra-trace work

Usage Guide

Standard procedure

Step 01

Inspect for cleanliness, cracks and chipped edges before use; a crack spreads quickly under heat or load, so retire the item at once and never patch it.

Step 02

Assemble as required for corrosion-resistant containment and digestion and confirm the connection is secure.

Step 03

Pour or transfer slowly along the wall to avoid impact on the base and splashing; with volatile or foaming media a slow stream cuts losses and cross-contamination.

Step 04

If heating is required, use a water bath or thermostatic device only; never apply direct flame.

Step 05

Clean promptly after use and choose the drying method according to the material; soak stubborn residues first and never scrape the wall with hard tools.

Step 06

Before first use, clean according to the material; soak in dilute acid where appropriate, rinse thoroughly and dry. New items may carry processing aids, so clean before contact with samples.

Step 07

Store without stacking or impact, in a ventilated and dry place; long stacking deforms the base, and volumetric ware should stand on its own.

Step 08

Keep one batch together and label different sizes separately to avoid picking the wrong item; once mixed, the batch is hard to identify when a problem appears.

Step 09

Keep a usage log with the commissioning date, media contacted and cleaning method, so replacement timing and traceability stay clear.

Maintenance & Notes

⚠️ Safety & handling notes

Avoid thermal shock

Sudden temperature changes create stress, especially in thick walls and wide openings; heat and cool gradually.

Prevent mechanical damage

Avoid impact, dropping and scratching; never carry by a thin or weak section.

Clean promptly

Clean immediately after use; dried residues are harder to remove. Avoid abrasive cleaning tools.

Drying by material

Air-dry or dry at low temperature; volumetric ware must never be oven-dried.

Periodic inspection

Check for cracks, deformation and seal failure after long use and replace when needed.

Identification and traceability

Items should carry a clear label and usage record; mixed use makes cleaning history and media contact untraceable.

Retirement criteria

Stop using an item for critical work once it is cracked, chipped, worn at the graduations or leaking; never patch and return it to service.

PTFE Beaker with Lid