SDI KIT [ silt density index ] We Gaby Instruments is the manufacturer And supplier of SDI Kit / SDI Test KIT in Coimbatore, Kerala, Tirupur, Pollachi, Erode, Salem, Chennai, Karur, Banglore, Idukki, Cochin, Trishur, Ernakulam, Trivandrum, Madurai, Tirunelveli Sdi - using a silt density index measurement apparatus specification： φ47mm micron rating : 0.45μm the value of pollution index (sdi apparatus) , namely, fouling index (fi) value, is one of important parameter to the index of water quality. It indicate the amount of particle, colloid and other substance in water that can occlude various water purified devices. Determining the sdi value, would be instrumental in fixing upon relevant water purified technology or device. Under astm method 4189-95, this way is generally accepted Made of aluminium metal to avoid breakage when using with ro water . Give long life when compared to plastic kits