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19 ga thinwall vs 18 ga standard
Posted By: R. BARBER (N CHARLESTON, SC) Apr 29, 2009
We have to give subcutaneous injections to our little 26 lb Basenji.
The vet started us out with 500 ml once a day using an 18 ga standard needle. We had to increase the fluids to 333 ml twice a day so we were looking for a way to make it a little easier on her.
We tried a 20 ga standard, once, but found out that it doubled the time (2 minutes per 100 ml increased to 4 minutes per ml)
I looked at the specs for a 19 ga thinwall needle and found that the hole in the center is .0315" (thirty one and a half thousandths), which is the same as the 18 ga standard, but the outside diameter of the 19 ga of course is smaller.
Changing to the smaller needle has helped. I don't know if it is so much because of the needle size, or that the Tyco/Kendall needles are sharper, but it has made life for all of us a little better.