These meters are easy to operate using the convenienct built-in Quick-Start Guide. SMART STABILITY™ and SMART AVERAGING™ functions simplify measurement process. Other features include automatic or maual pH calibration with 1 to 5 points; bright LCD display with ready indication; 200 point datalogger and RS-232 or USB interface; advanced self-tests; BNC connectors; and universal power adapter. CE-and CSA-approved, UL-listed.

Orion® 3-Star Benchtop pH Meter is a single-channel pH meter with auto-buffer recognition of DIN and US/NIST buffers.

Orion® 4-Star Benchtop pH/ISE Meter is a dual function pH/ISE meter with autostirrer control, point-to-point ISE calibration of up to 5 points, and automatic blank correction.

Orion® 5-Star Benchtop Multimeter is a multi-function meter for pH, direct ion, and conductivity measurement; optional calibration to Winkler Titration for BOD measurements. Features mini DIN locking DO and conductivity probe connectors; automatic blank correction; automatic barometric pressure compensation. Uses a polarographic DO probe.

Includes: Meter; electrode; pH 4.01, 7.01 and 10.01 buffers (475 mL); electrode storage solution (475 mL); and electrode stand. Orion 5-Star Meter Kit also includes: conductivity cell, conductivity/TDS standard, DO probe, DO cal sleeve, overflow funnel with stir box, and service kit.

SPECIFICATIONS

pH Range:	-2.000 to 19.999; or 0 to 14 in aqueous solutions
mV:	±1999.9
ISE Range:	0 to 19,900 M, mg/L, %. ppb, or no units (4-Star and 5-Star only)
Temperature:	-5 to 105.0°C
Electrode Included:	Triode pH/ATC (3-Star), ROSS Ultra (4- and 5-Star)