Find Reviews and Compare Prices for:       All ProductsHydrometers and Refractometers     3.1 (40)   Add a review Instant Ocean SeaTest Hydrometer   Hydrometer 1.000 to 1.030 specific gravity by Instant Ocean. Swing arm style is easy to use and read specific gravity Have a question? Just Ask! Member Reviews Compare Prices Product Spec Send to a friend Set Price Alert Searched Instant Ocean SeaTest Hydrometer in 150 stores, 6 results found Image Description   Store   Price Instant Ocean Aquarium Hydrometer If this item doesn't belong here, click Remove and help us keep our results accurate.   Amazon.com   2 Store Reviews   $7.19 Go to Store Instant Ocean Aquarium Hydrometer If this item doesn't belong here, click Remove and help us keep our results accurate.   Amazon.com   2 Store Reviews   $9.47 (used) Go to Store Instant Ocean Hydrometer If this item doesn't belong here, click Remove and help us keep our results accurate.   Amazon.com   2 Store Reviews   $9.79 Go to Store Full Range Hydrometer If this item doesn't belong here, click Remove and help us keep our results accurate.   Amazon.com   2 Store Reviews   $15.42 Go to Store Instant Ocean Hydrometer If this item doesn't belong here, click Remove and help us keep our results accurate.   Amazon.com   2 Store Reviews   $21.49 Go to Store Instant Ocean Hydrometer If this item doesn't belong here, click Remove and help us keep our results accurate.   Amazon.com   2 Store Reviews   $41.32 (used) Go to Store You can also search these stores   Find this product on eBay   eBay   5 Store Reviews   Search on eBay Are we missing a store? Let us know! Something wrong in this page? Let us know! Related products: More Instant Ocean Hydrometers and Refractometers Other Hydrometers and Refractometers internal use: spec455