{"product_id":"copkim-7-87-inch-plastic-secchi-disk-set-secchi-disc-with-black-and-white-quadrants-steel-cone-holding-line-and-100-ft-tape-measure-for-clarity-measurements","title":"Copkim 7.87 Inch Plastic Secchi Disk Set Secchi Disc with Black and White Quadrants, Steel Cone, Holding Line and 100 ft Tape Measure for Clarity Measurements","description":"\u003ch3\u003eAbout this item\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eComprehensive Package: every purchase of the set includes the items you need for water clarity measurements; The package contains 1 piece of Secchi disk, 1 roll of holding string, 1 piece of cone weight, and 1 piece of tape measure; This ensures that you have tools to accurately measure both fresh and seawater transparency\u003c\/li\u003e\n\u003cli\u003eIdeal Size: bearing a diameter of around 7.87 inches\/20 cm, the Secchi disc is suitably sized for efficient visibility under water; Meanwhile, the tape measure features a measurement of about 100 ft\/ 30 meters, and the rope is about 16.4 ft\/ 5 meter long, measurements that allow ample depth tolerance for deep water clarity measurement without hindrance\u003c\/li\u003e\n\u003cli\u003eQuality Materials: the acrylic Secchi disc, the pivotal piece, is made from acrylic which ensures its resilience, lightweight and portable; The cone, designed to weigh down the disk, is crafted from stainless steel ensuring its longevity, hard to rust; The holding string is made from robust polymer to handle the disk and cone weight without elasticity, hard to tear and sturdy for long time use\u003c\/li\u003e\n\u003cli\u003eFreshwater Measuring: use the black and white side, and when the water surface is stable on an unclouded day, lower the acrylic Secchi disk into the water with a holding rope until the disc can hardly be seen from above; Measure the length of the rope immersed in water, repeat it several times, and get the average to get freshwater clarity\u003c\/li\u003e\n\u003cli\u003eSaltwater Measuring: use the pure white side, at the backlight of the main deck, put plastic Secchi disc into the water, and sink to a depth just out of sight; Then slowly lift the rope until the dish is faintly visible, read the mark of the rope on the water surface, repeat for 2 or 3 times and take the average to get observed clarity; Read the mark of the rope at the crest and trough respectively when wavy, if the inclination angle exceeds 15, the depth should be corrected\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOverview\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Copkim\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Dimensions:\u003c\/strong\u003e 13.39\"L x 8.27\"W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eItem Weight:\u003c\/strong\u003e 1.19 kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasurement Accuracy:\u003c\/strong\u003e High\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCase Material:\u003c\/strong\u003e Acrylic\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Copkim","offers":[{"title":"Default Title","offer_id":48063236931802,"sku":"B0CLTS991B","price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0827\/8884\/3738\/files\/41Rd9ADRaSL.jpg?v=1781597639","url":"https:\/\/gearfighter.us\/products\/copkim-7-87-inch-plastic-secchi-disk-set-secchi-disc-with-black-and-white-quadrants-steel-cone-holding-line-and-100-ft-tape-measure-for-clarity-measurements","provider":"GearFighter","version":"1.0","type":"link"}