It is also recommended that the batteries seconds. should be removed during international transit or for long periods without use. Manufacturer’s details Bellingham + Stanley, a Xylem brand Xylem, Longfield Road, Tunbridge Wells, Kent, TN2 3EY, UK. sales.bs.uk@xyleminc.com www.bellinghamandstanley.com...
Setting up your OPTi Your OPTi has been delivered with “Brix” in scale position A ( ). For many applications this is enough to start working straight out of the box. S. A . 0 1 When first switching on, the instrument will briefly display the scale loaded to each channel.
Scale list Index Application Scale Units Range Primary °Brix (ATC) 0–95 Primary °Brix (no TC) 0–95 Primary Refractive Index (ATC) 1.33–1.53 Primary Refractive Index (no TC) 1.33–1.53 Automotive AdBlue®/DEF (NOx reduction) % Weight / Weight 0–40 Automotive Ethylene Glycol °C Freezing Point 0 to -50 Automotive Ethylene Glycol...
User operation Taking a reading Zero calibration Before taking a reading clean the prism surface thoroughly using a The zero calibration is essential to ensure accurate readings. A zero suitable solvent, eg water or methyl alcohol depending on the sample calibration should be carried out daily.
Error messages In order to achieve the maximum performance from the refractometer, it is essential that care is taken when cleaning the instrument and applying sample to the prism. Sample concentration may vary considerably from the surface to the centre of a mass whether in a beaker or on a spoon or spatula.
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