HANNA HI 98129

Automatic one or two point calibration ( requires pH and EC/ TDS calibration solutions sold separately) . Meter is waterproof and it floats. Dual line LCD displays pH and temperature. Unique renewable cloth electrode junction - when clogged, simply pull a short length out, snip off old section, and expose fresh material. * Ranges: o EC 0 to 3999 µ S/ cm. o TDS 0 to 2000 ppm. o pH 0.00 to 14.00. o Temp 0.0 to 60.0 ° C ( 32.0 to 140.0 ° F) . * Resolution: o EC 1 µ S/ cm. o TDS 1 ppm. o pH 0.01 o Temp 0.1 ° C or 0.1° F. * Accuracy ( @ 20 ° C) : o EC/ TDS ± 2% F.S. o pH ± 0.05. o Temp ± 0.5 ° C or ± 1 ° F. * Temp. Compensation: o pH: automatic o EC/ TDS: with ß = 0.0 to 2.4% / ° C. * Calibration: o pH: Automatic 1 or 2 point w/ 2 sets of memorized buffers. o EC/ TDS: Automatic at 1 point. * EC/ TDS Conversion factor: 0.45 to 1.00 ( CONV) . * Environment: Use meter from 0 to 50° C ( 32 to 122 ° F) ; RH 100% * Battery Type/ Life: 4 x 1.5V w/ Battery error prevention system/ 100 hours. * Auto Shut-off: After 8 minutes. * LCD: Custom, dual-level. * Casing: Waterproof, 100% buoyancy. * Stability indicator: Illuminates when reading is stable. * Dimensions: 163 x 40 x 26mm ( 6.4 x 1.6 x 1.0 inches) . * Weight: 85g ( 3.0oz) .