13 ms·

Assuming these terms are all correctly spelled, this has to be the shortest sentence I've understood the least of on HN. Guess I've got some googling to do.

by libria 2y ago

kragen 2y ago
they are! sorry to be telegraphic
NavinF 2y ago
UHMW = ultra high molecular weight. Each molecule is literally heavy because they have a lot of atoms. PE = polyethylene. The most popular plastic on this planet. HDPE = high-density polyethylene. One of the most common plastics. Milk jugs, glue bottles, etc. Stick some UHMW tape on anything that needs to slide easier. Its surface is quite slippery
- jessebro 2y ago
  HDPE is also what Nalgenes and the like are made of (or used to be anyway), and is very popular for storing chemicals as well. It is very nearly completely inert.
  - kragen 2y ago
    you cunninghammed me: nalgenes are polycarbonate, which is a lot less inert all the polyethylenes are relatively inert, because polyethylenes are in some sense just heavy paraffins. paraffin is germanized latin for 'relatively inert'
    - deleted 2y ago
      [deleted]
    - PuffinBlue 2y ago
      And you have Cunninghammed me :-) Some Nalgene's are polycarbonate, like those commonly drunk from. But not all, some are HDPE[0,1,2]. Some are Polypropylene co-polymer[3] but those are more for specialist things I guess. [0] https://ultralightoutdoorgear.co.uk/ultralite-1-litre-wide-mouth-hdpe-bottle/ https://ultralightoutdoorgear.co.uk/ultralite-1-litre-wide-m... [1] https://www.cotswoldoutdoor.com/p/nalgene-hdpe-125ml-wide-mouth-storage-bottle-E6124049.html https://www.cotswoldoutdoor.com/p/nalgene-hdpe-125ml-wide-mo... [2] https://www.elitemountainsupplies.co.uk/camping-trekking-c4/hydration-purification-c31/nalgene-c70/nalgene-medium-travel-kit-p312 https://www.elitemountainsupplies.co.uk/camping-trekking-c4/... [3] https://www.thelabwarehouse.com/products/bottle-nalgene-ppco-square-w-mouth-with-pp-screwcap-500ml https://www.thelabwarehouse.com/products/bottle-nalgene-ppco...
      - kragen 2y ago
        oh, thanks! i only knew the pc ones
    - zro 2y ago
      The clear Nalgenes are polycarbonate, but the opaque ones (sold as "Ultralite Bottle" on their website) are made of HDPE

Assuming these terms are all correctly spelled, this has to be the shortest sentence I've understood the least of on HN. Guess I've got some googling to do.

by libria 2y ago

Assuming these terms are all correctly spelled, this has to be the shortest sentence I've understood the least of on HN. Guess I've got some googling to do.

kragen 2y ago

they are! sorry to be telegraphic

NavinF 2y ago

UHMW = ultra high molecular weight. Each molecule is literally heavy because they have a lot of atoms. PE = polyethylene. The most popular plastic on this planet. HDPE = high-density polyethylene. One of the most common plastics. Milk jugs, glue bottles, etc. Stick some UHMW tape on anything that needs to slide easier. Its surface is quite slippery

jessebro 2y ago
HDPE is also what Nalgenes and the like are made of (or used to be anyway), and is very popular for storing chemicals as well. It is very nearly completely inert.
- kragen 2y ago
  you cunninghammed me: nalgenes are polycarbonate, which is a lot less inert all the polyethylenes are relatively inert, because polyethylenes are in some sense just heavy paraffins. paraffin is germanized latin for 'relatively inert'
  - deleted 2y ago
    [deleted]
  - PuffinBlue 2y ago
    And you have Cunninghammed me :-) Some Nalgene's are polycarbonate, like those commonly drunk from. But not all, some are HDPE[0,1,2]. Some are Polypropylene co-polymer[3] but those are more for specialist things I guess. [0] https://ultralightoutdoorgear.co.uk/ultralite-1-litre-wide-mouth-hdpe-bottle/ https://ultralightoutdoorgear.co.uk/ultralite-1-litre-wide-m... [1] https://www.cotswoldoutdoor.com/p/nalgene-hdpe-125ml-wide-mouth-storage-bottle-E6124049.html https://www.cotswoldoutdoor.com/p/nalgene-hdpe-125ml-wide-mo... [2] https://www.elitemountainsupplies.co.uk/camping-trekking-c4/hydration-purification-c31/nalgene-c70/nalgene-medium-travel-kit-p312 https://www.elitemountainsupplies.co.uk/camping-trekking-c4/... [3] https://www.thelabwarehouse.com/products/bottle-nalgene-ppco-square-w-mouth-with-pp-screwcap-500ml https://www.thelabwarehouse.com/products/bottle-nalgene-ppco...
    - kragen 2y ago
      oh, thanks! i only knew the pc ones
  - zro 2y ago
    The clear Nalgenes are polycarbonate, but the opaque ones (sold as "Ultralite Bottle" on their website) are made of HDPE