Earlier this morning I found the time to glance through the latest issue of the British Medical Journal. It's somewhat ironic to say that "I found the time to glance through the latest issue of the British Medical Journal" since the article I glanced at was about how little time physicians get to spend with their patients.


Heavy Duty Dual Wall
CLEAR-VU™Hi-Flow CLEAR-VU™Dual Wall Flexible Dual Wall Single Wall
Material Cross-LinkedPolyolefin Cross-LinkedPolyolefin Cross-LinkedPolyolefin Cross-LinkedPolyolefin Cross-LinkedPolyolefin
Shrink Ratio 3:1 4:1 3:1 3:1 2:1
Colors Red and Black Clear Translucent Red, Blue, Yellow Red, Black and Clear Red, Blue, Yellow
Meltable Sealant Yes Yes Yes Yes No
UL 486 D No E157227 E157227 E35506
CSA C622.2 No No No LR31929
Military Spec. MIL-DTL-23053/15,Class 2 No MIL-DTL-23053/4 MIL-DTL-23053/4Class 3 MIL-DTL-23053/5,Class 1
Flame Retardant Yes No No Red and Black Yes
Operating Temperature -67°F To 230°F (-55°C To 110°C) -67°F To 230°F (-55°C To 110°C) -67°F To 230°F (-55°C To 110°C) -67°F To 230°F (-55°C To 110°C) -67°F To 275°F (-55°C To 135°C)

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