Labthink Packaging and Film Testing Instruments

Labthink manufactures testing instruments for packaging materials in Jinan, China: oxygen and water vapor permeability analyzers, tensile testers, heat seal testers, leak testers and headspace gas analyzers.

C203H oxygen transmission rate test system

The C203H measures oxygen transmission of films and sheets with a coulometric sensor and the equal pressure method per ASTM D3985. Three independent 50 cm² cells test samples in parallel. The range is 0.01–200 cc/(m²·day) with automatic sample clamping.

Range 0.01–200 cc/(m²·day)
Three 50 cm² test cells
Automatic sample clamping
Method ASTM D3985

C303H and C360H water vapor transmission testers

The C303H measures water vapor transmission with an infrared sensor per ASTM F1249 over 0.005–40 g/(m²·day) at 5–90 % RH. The C360H uses the gravimetric method per ASTM E96. It has 12 test stations for desiccant and water methods.

C303H range 0.005–40 g/(m²·day)
Infrared sensor, ASTM F1249
C360H gravimetric, 12 stations
Humidity 5–90 % RH

C406H combined oxygen and water vapor analyzer

The C406H combines a coulometric oxygen sensor with an infrared water vapor sensor. OTR and WVTR tests are completed for each sample mounting. It has six test chambers with ranges of 0.02–200 cc/(m²·day) for oxygen and 0.02–40 g/(m²·day) for vapor.

Six test chambers
Oxygen 0.02–200 cc/(m²·day)
Vapor 0.02–40 g/(m²·day)
OTR and WVTR in one mounting

C106H gas permeability test system

The C106H uses the differential pressure method to measure gas transmission rate, solubility, diffusion and permeability coefficients. Six independent cells test films, sheets and metal foils. The range is 0.01–50,000 cm³/(m²·24h·0.1MPa) at 10–210 kPa.

Six independent test cells
Range up to 50,000 cm³/(m²·24h)
Test pressure 10–210 kPa
Diffusion coefficient output

C610H auto tensile tester

The C610H tests films, tapes, labels and foils for tensile, peel, deformation, tearing and heat seal strength. The standard load cell is 500 N with optional 50–1000 N cells. Test speed is 0.05–500 mm/min with a 1000 mm stroke.

Load cell 500 N
Optional cells 50–1000 N
Speed 0.05–500 mm/min
Stroke 1000 mm

C630H heat seal tester

The C630H determines dwell time, sealing pressure and sealing temperature for films and laminates. Five groups of upper and lower jaws with independent temperature control run five settings per cycle. Temperature reaches 300 °C, pressure 0.1–0.7 MPa, dwell 0.1–999.99 s.

Five groups of sealing jaws
Temperature up to 300 °C
Pressure 0.1–0.7 MPa
Dwell 0.1–999.99 s

C660B and C690H package leak testers

The C660B tests package leaks under vacuum down to −90 kPa in standard, multi-grade and methylene blue modes. The C690H detects microleaks of vials and ampoules by vacuum decay per ASTM F2338. Its detection limit is ≤2 µm for batches of 20–120 samples.

C660B vacuum to −90 kPa
Vacuum decay, ASTM F2338
Detection limit ≤2 µm
C690H batch 20–120 samples

C650H headspace gas analyzer

The C650H measures oxygen content in sealed bags, bottles and cans, and with an optional sensor also measures CO₂. Its ceramic oxygen sensor is developed by Labthink. Ranges are 0.2–21 % O₂ and 2–100 % CO₂ with samples from 5 ml.

Oxygen 0.2–21 %
Carbon dioxide 2–100 %
Sample from 5 ml
Ceramic O₂ sensor

Selecting permeability analyzers by material and barrier level

The method depends on the barrier level and the permeant. For oxygen, the C203H equal pressure analyzer uses a coulometric sensor per ASTM D3985; for water vapor, choose the infrared C303H per ASTM F1249 or the gravimetric C360H per ASTM E96.

When both values are needed on one sample, the C406H runs OTR and WVTR in six chambers.

For O₂, N₂ and CO₂ with diffusion and solubility coefficients, the C106H applies the differential pressure method.

Mechanical testing and package leak control

Film, seal and label strength is measured on the C610H tensile tester with 50–1000 N load cells, while the C630H with five groups of sealing jaws sets heat sealing parameters. Bag leaks are tested on the C660B at vacuum down to −90 kPa, vials and ampoules on the C690H by vacuum decay.

Headspace gas in modified atmosphere packages is measured by the C650H analyzer: oxygen 0.2–21 %, carbon dioxide 2–100 %.

Labthink and model names are trademarks of their respective owners and are used only to identify the equipment for which we source parts. SpareX is not an official dealer, distributor or representative of Labthink and is not affiliated with the trademark owner. Origin, documents and warranty are stated for each item in the quotation.