Replacement tubes for API KIT

  1. r

    rcordova233 Well Known Member Member

  2. Aquaphobia

    Aquaphobia Fishlore Legend Member

    I think they would, they have the same diameter as the API tubes (I just checked) so the distance light has to travel through the solution would be the same and the colour should match the chart. Only thing I wouldn't be sure of is whether the plastic affects the passage of the light differently from the glass. And you'd have to ensure that you measured out 5mL of course;)

    I agree, the price of the API tubes is ridiculous!
     
  3. OP
    OP
    r

    rcordova233 Well Known Member Member

    DIAMETER. THAT'S WHAT IT WAS!!! Thanks I've been scratching my head all day trying to figure out what it was the couldn't be different. Hopefully somebody else can answer if plastic affects light. I'll try to find some glass ones in the meantime.
     
  4. Aquaphobia

    Aquaphobia Fishlore Legend Member

    I was just on ebay and found several. Nice ones, borosilicate, laboratory-grade glass and all that;)
     
  5. OP
    OP
    r

    rcordova233 Well Known Member Member

    Oh shoot. Could the test liquids stain the plastic? I guess this wouldn't be good for testing if it does.
     
  6. OP
    OP
    r

    rcordova233 Well Known Member Member

    Would you happen to have a link?
     
  7. TexasDomer

    TexasDomer Fishlore Legend Member

  8. OP
    OP
    r

    rcordova233 Well Known Member Member

  9. Aquaphobia

    Aquaphobia Fishlore Legend Member

    Those are 20mm in diameter.
     
  10. OP
    OP
    r

    rcordova233 Well Known Member Member

    Is that bad?
     
  11. Aquaphobia

    Aquaphobia Fishlore Legend Member

    Well, the "thickness" of the liquid that the light has to pass through may affect the colour that you see. It's 50% wider which is a significant difference.
     
  12. OP
    OP
    r

    rcordova233 Well Known Member Member

    Oohhh. Alright back to looking then.
     
  13. OP
    OP
    r

    rcordova233 Well Known Member Member

    What diameter would work?
     
  14. Aquaphobia

    Aquaphobia Fishlore Legend Member

  15. TexasDomer

    TexasDomer Fishlore Legend Member

    I think you're overthinking this.

    I don't think it'll change the color too much and I would feel comfortable using those.

    You can look at the liquid from the top (looking straight down the tube) and the color should be the same or too similar for you to see a difference as when you use the API tubes.
     
  16. OP
    OP
    r

    rcordova233 Well Known Member Member

    Hmmm....... just put the order in........ kinda feel like I played myself. Whatever though its 10 tubes for 5 bucks. Just have to wait a week.
     
  17. Aquaphobia

    Aquaphobia Fishlore Legend Member

    Blame it on my OCD;)