physical properties resistance classification of sterile laboratory plastic wares

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Laboratory > Plastic Wares > Physical Properties of Plastic Labwares

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Physical Properties of Labware - Chart - I
Resin Code	Max.Use Temp°C	Brittleness Temp°C	Transparency	Specific Gravity	Flexibility	Water Absorption %
HDPE	120	-100	Translucent	0.95	Rigid	20.01
LDPE	80	-100	Translucent	0.92	Excel	<0.01
PC	135	-135	Clear	1.20	Rigid	0.35
PMMA	50	20	Clear	1.20	Rigid	0.30
PP	135	0	Translucent	0.90	Rigid	<0.02
PS	90	20	Clear	1.05	Rigid	0.05
PSF	165	-10	Clear	1.24	Rigid	0.30
PTFE	270	-200	Opaque	2.17	Excel	<0.01
PVDF	110	-62	Translucent	1.75	Rigid	0.05
TPX*	175	20	Clear	0.83	Rigid	<0.01

Abbrevation for Resin Codes

HDPE - High-density polyethylene

LDPE - Low-density polyethylene

PC - Polycarbonate

PMMA - Polymethyl methacrylate

PP - Polypropylene

PS - Polystyrene

PSF - Polysulfone

PTFE - Polytetrafluoroethylene

PVDF - Polyvinylidene fluoride

TPX* - Polymethylpentene

* TPX is the Registered Trade Mark of Mitsui & Co. Ltd

Physical Properties of Labware - Chart - II

Resin
Code

Autoclaving

Gas

Dry Heat

Radiation

Disinfectant

HDPE No Yes No Yes Yes

LDPE No Yes No Yes Yes

PC Yes* Yes No No Yes

PMMA No Yes No Yes Some

PP Yes Yes No No Yes

PS No Yes No Yes Some

PSF Yes Yes Yes* Yes Yes

PTFE Yes Yes Yes No Yes

PVDF Yes Yes No No Yes

TPX* Yes Yes Yes* No Yes

Sterilization

# Autoclaving ( 121°C, 15 psig for 20 minutes) Clean and rinse item with distilled water before autoclaving. Certain chemicals which have no appreciable effect on resins at room temperature may cause deterioration at autoclaving temperatures.
Always completely disengage threads before autoclaving

# Gas - Ethylene Oxide, Formaldehyde

# Dry Heat - 160°C for 120 Minutes

# Disinfectant - Benzalkonium Chloride, Formalin, Ethanol etc..

# Radiation - Gamma irradiated at 2.5 Mrad with unstabilized plastic

* Sterilizing reduces mechanical strength, Do not use Polycarbonate- PC vessels for vaccum application if they have been autoclaved

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