Item Description: 3.6ml Vial of 53.0mS Salinity Refractometer Calibration Fluid (Conductivity Standard) THIS IS THE BEST WAY TO CALIBRATE YOUR SALINITY REFRACTOMETERS! NO MATTER WHICH UNIT YOU HAVE OR WHERE IT CAME FROM, THIS FLUID WILL HELP YOU GET THE MOST OUT OF YOUR SALINITY REFRACTOMETER! Specifications: Conductivity: 53.0 mS Salt Water Specific Gravity: 1.0264 SG Salinity in PPT: 35PPT Refractive Index @ 25'C: 1.3394 RI @ 25C Appearance and Color: Clear Liquid Package: Comes in an amber glass vial with a plastic applicator rod in the cap for easy dispensing THIS FLUID ENABLES YOUR SALINITY REFRACTOMETER TO BE AS ACCURATE AS POSSIBLE! COMMON QUESTIONS: Why do I need this fluid? - Simply put, it will calibrate your Salinity Refractometer in the middle of the usual salt water marine enviroment range. Calibraing it to 0PPT/1.000SG with distilled water, r/o water, etc., make that point the most accurate, while the further points are gradually less accurate. The theory behind this fluid is that by calibrating the unit at the middle of the salt water environment range, you are creating the most accurate point (the point of calibration) nearest to your test samples. If you have very sensitive marine life, then this fluid is for you! How do I use this fluid? - Place a drop or two of the fluid onto the prism of your Salinity Refractometer and it should read 35PPT/1.0264SG. If not, adjust your calibration screw on your Refractometer. Can I still use Distilled Water to Calibrate? - Like the 53.0mS Calibration Fluid, distilled (r/o, di, etc) water can be used to calibrate your Salinity Refractometer. It is still a very good calibrating fluid. This fluid is designed to be a little more accurate for those who need that extra little benefit. Store with the lid on tight in a dark and dry environment in moderate temperature (near room temp). Shipping Domestic S H is $5.00 for (1) Vial, and an extra $1.00 per extra Vial. For international shipments is is $12.00 ($10.00 to Canada) Air Mail via USPS (4-7 business days) and $1.00 for each additional Vial. National Industrial Supply 2767 Maricopa Street Torrance, CA 90503, USA Sales: (310) 748-6858 Fax: (310) 833-7306 E-mail: [email protected] Timezone: -8:00 GMT We prefer Paypal! We accept Credit Cards via Phone, Fax or E-mail too! On Oct-13-11 at 15:14:15 PDT, seller added the following information: Froo www.froo.com | Froo Cross Sell, Free Cross Sell, Cross promote, Marketing, listing Apps, Apps, Application On Oct-13-11 at 15:14:17 PDT, seller added the following information: Froo www.froo.com | Froo Cross Sell, Free Cross Sell, Cross promote, Marketing, listing Apps, Apps, Application