TEST TUBE WITH SCREW CAP – POLYLAB BRAND Posted on February 22, 2017April 25, 2017 by admin These polypropylene tubes provide excellent aption for RIA, coagulation & bacteriology etc. The cap in screwed on to the tube & thence this tube can be filled up to the brim. CODE NO. PARTICULARS PACKING 64016 16 x 100 mm 500 Pcs