BookTitleWATSON BIO LAB General Catalog

Summary

WATSON BIO LAB General Catalog

Wide writing spaceSealing pointHalf plug sealIt has wide writing space on a cap andthe frosted area on the body.①The protrusions on the cap indicate　you the best sealing position when　it fits on the groove.②The left picture shows too muchscrewing when the protrusions go overthe groove.③The left picture shows possible　loosening the cap and sample　leakage when the protrusionscome before the groove.High precision-scaletill the cone topGraduation is molded so that it doesnot fade away. Scale is made till 0.5 mLline at the cone.Convenient functionsHigh airtightnessThe proper cap torque-position is informed by the click,when one of the 3 protrusions inside the lid fitsinto the groove on the tube.Bigger sealing area performshigher airtightness.Triple thread screwTriple thread screw enables easyopen/close with less rotation.It also prevents screwinga cap diagonally.Time / h Time / hWeight Loss / g0 50 100 150 2000.00.10.20.30.40.515 mL centrifuge tubeWeight Loss / g0 50 100 150 2000.00.20.40.60.81.01.250 mL centrifuge tube [test condition]Fill centrifuge tube with 100% EtOHto 80% of the max. volume (40 mLfor 50 mL tube, 12 mL for 15 mLtube). Place the tube upside-downunder the room temperature andcheck weight loss with time.Conventional tubesWatsonTubes　53Centrifuge Tube TubesCentrifuge Tube