OSTEMER 322 Crystal Clear

(2 customer reviews)



Ostemer 322 is a versatile UV-curing resin made specifically for the requirements of microfluidics, MEMS and lab-on-chip.


  • Stiff, transparent and chemically inert
  • Excellent replication and low shrinkage
  • Compatibility with cells and microscopy
  • Easy to bond/seal to other materials
  • Compatible with both soft (PDMS) and hard molds (Si/SU8 and aluminum – after passivation)
SKU: 322 Category: Tag:

Ostemer Crystal Clear

Additional information

Weight N/A
Dimensions 10 × 15 × 10 cm

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> 6 hours if kept away from light and heat

First cure

UV-exposure, 365 nm

Second cure

Heat cure in oven 110 degC for 1-2 hours depending on thickness

Mold materials

Silicones, polished aluminum, PET, PP, or any material coated with a low surface energy coating such as Telfon AF or PTFE

Young's modulus

1.5 GPa after full cure

Mold shrinkage

0-2% depending on curing method, the resin gels very late in the polymerisation process and by keeping an unexposed reservoir the shrinkage can be reduced to close to 0%

Solvent resistance

Toluene, Acetone, DMSO, Ethanol, Methanol

Acid resistance

10% sulfuric acid > 1 month


Optically clear, low autofluorescence

Bonds to

Glass, metals, metal oxides, silicon

2 reviews for OSTEMER 322 Crystal Clear

  1. Alexander Vastesson

    I have been using the OSTEMER Crystal Clear for over a year to build microfluidic devices for my PhD projects. OSTEMER Crystal Clear has allowed me to rapidly iterate new designs and build sturdy nice looking chips. I have been using it to mold microfluidic cartridges and also bonding the chips to silicon or glass without surface treatment which is very useful! This is a very handy building material to have in every microfluidic lab!

  2. Drago (verified owner)

    I have been using OSTEMER 322-40 for the last three years for the fabrication of microfluidic devices especially for in vitro cell culture applications with integrated sensor systems. The introduction of the thiol-ene-epoxy thermoset to our laboratory simplified the integration of additional functional units, increased the durability of hybrid chips and enabled the fabrication of complex multi-layered structures. One advantage over PDMS is the reduced bubble formation in channels when performing long time experiments outside of the cell incubator. Having the OSTEMER in the laboratory shelf does not only increase the “toolbox” but actually enables rapid fabrication of robust systems.

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Ostemer Crystal Clear