bigmack wrote: ↑22 Jun 2018, 12:27
Thanks to Maria .
Part number 1152100
Unfortunately they are awaiting stock
Well my Silicone teats turned up from Serrata.
been busy last term replacing the more corrosive droppers . Even put GHS labels on them while I was at it
Anyway. come in today and went to top up the 1M sodium hydroxide ones for a prac and discovered that several of them have started to "become one " with the dropper bottle requiring peeling off .
Must say I'm a bit disappointed , I had hoped they might last longer than the old Red Rubber ones . It's possible that the kids just screwed the lids on really tight .
So curious to see how the ones on the Acids and Alcohol based indicators last
On a positive note , they do fit onto the glass tube and into the caps really easy compared to the old red rubber ones . They are also smaller so when you squeeze you only get about 10 drops when you squeeze the teat compared to about 25 from the red rubber ones ......maybe less wastage .
However I did have issues with them . We have a collection of various 25ml dropper bottles and there seems to be a difference in the size of the flare on the end of the glass dropper tube . Only the large flange / flared ones seemed to create a seal in the teat . IE if you use the smaller flared ones when you squeeze the dropper and release it doesn't suck up and liquid .
This now means I have to use the smaller flanged ones on the red Rubber teats which I will use on non corrosive droppers .