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| Physical Properties of Lab-Wares Plastic Products
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| Resin
| Max use Temp oC
| Bittleness TempoC
| Transparency
| Sterlization
| Flexibility
| Water Absorption %
| | Autoclaving
| Gas
| Dry Heat
| Radiation
| Disinfectant
| Specific Gravity |
| HDPE
| 120
| -100
| Translucent
| No
| Yes
| No
| Yes
| Yes
| 0.95
| Rigid
| 20.01
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| LDPE
| 80
| -100
| Translucent
| No
| Yes
| No
| Yes
| Yes
| 0.92
| Excel
| >0.01
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| PC
| 135
| -135
| Clear
| Yes
| Yes
| No
| Yes
| Yes
| 1.20
| Rigid
| 0.35
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| PP
| 135
| 0
| Translucent
| Yes
| Yes
| No
| No
| Yes
| 0.90
| Rigid
| <0.02
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| PS
| 90
| 20
| Clear
| No
| Yes
| No
| Yes
| Some
| 1.05
| Rigid
| 0.05
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| Sterlization
| | Autoclaving (121oC, 15 psig for 20 minutes) Clean and rinse item with distilled water before autoclaving.
Certain chemicals which have no appreciable effects on resins at room temperature may cause deterioration at autoclaving temperature.
| | Always completely disengage threads before autoclaving
| | Gas - Ethylene oxide formaldehyde.
| | Dry heat - 160o, for 120 minutes.
| | Disinfectant - Benzalkonium chloride, formalin, ethanol etc.
| | Radiation - gamma irradiated at 2.5 Mard with un-stablized plastic. Sterlizing reduces mechanical strengh. Do not use PC vessels for vaccum application if they have been Autoclaved.
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| Chemical Resistance for Lab-Wares Plastic Products
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| Classes of Substance at Room Temp. | HDPE
| LDPE
| PC
| PP
| PS
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| Acids, Dilute or Weak
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| Acids, Strong & Concentrated
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| Alcohols, Ailphatic
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| Aldehydes
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| Bases
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| Esters
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| Hydroocarbons, Aliphatic
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| Hydrocarbons, Aromatic
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| Hydrocarbons, Halogenated
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| Ketones
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| Oxidising Agents, Stong
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30 days of constant exposure cause no damage. Plastics may even tolerate for years
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Some effects after 7 days of constant exposure to the reagent like crazing, cracking, loss of strength of discoloration.
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Little or no damage after 30 days of constant exposure to the reagents.
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Not recommeded for continuous use. Immediate damage may occur.
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| As a continuing policy of product improvement, designs and specifications are subject to change without prior notice.
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