Item Drescription: A 3.6ml Vial of Monobromonapthalene (AKA, Alphabromonapthalene) This Fluid is THE contact fluid for Abbe Refractometers and some Honey Refractometers that require calibration with an acrylic block. A drop on the prism of the Refractometer, and then place the acrylic block on top and you are on your way! Each Vial is Repackaged from a bulk container and filled into 4ml Amber Vials that have plastic rods in the cap for easy applications of product. The application rod actually takes up some of the internal space, hence the 3.6ml! International Shipping: International Shipping is $12.00 to Canada and $15.00 for the rest of the world. Shipping is via USPS Global Priority Mail, takes 6-10 business days to arrive and comes with Delivery Confirmation only. For an additional $15.00 we can ship via USPS Express Mail and it will arrive in 3-5 busniess days, and come with Insurance, Delivery Confirmation and a Tracking Number. We also carry Benchtop Abbe Refractometers! Check out our Store for more items! National Industrial Supply 30777 Rancho California #891420 Temecula, CA 92589, USA Sales: 951.308.9269 Fax: 310.733.5480