Spesifikasi

PH Meter

Precision titrant delivery system

40,000 step, piston dosing pump
Accurate to 0.1%
Delivers as little as 0.125 µL of titrant
Precision ground, 5 mL glass burette with PTFE plunger, PTFE burette tubing, and polyurethane tube jacketing (thermally insulating, light blocking)
Glass anti-diffusion dispensing tip
Clip-Lock™ exchangeable burette system enables users to exchange reagent burettes in a matter of seconds

Sealed solvent system

Change to fresh solvent in a matter of seconds without opening the titration vessel
Minimises exposure to ambient humidity, reducing titrant consumption and saving time
PTFE solvent tubing is resistant to harsh KF solvents and titrants

Beaker top

Chemically-resistant reaction vessel cap and fittings
Quick-remove sample port plug with replaceable silicone rubber septum

Anti-diffusion burette tip

Delivers titrant in high turbulence zone, ensuring rapid reaction
Prevents unwanted diffusion of titrant

Built-in stirrer

Automatic, integrated magnetic stirrer adjustable from 200-2000 RPM
Optical feedback for automatic speed control
Optional external stirrer available

Rechargeable indicating desiccant

Prevents the ingress of ambient humidity into the sealed solvent system while maintaining full titrator functionality
Minimises changes to titrant titre
Indicates when adsorption capacity is depleted
Regenerates at 150°C

PTFE bottle cap

Caps fit any GL45-threaded bottle
Chemically resistant caps and fittings
Removable desiccant cartridges

Specifications

Range		<100 ppm to 100%
Resolution		1 ppm (0.0001%)
Result Units		%, ppm, mg/g, µg/g, mg, µg, mg/mL, µg/mL, mg/pc, µg/pc
Sample Type		liquid or solid
Determination:
Pre-Titration Conditioning		automatic
Background Drift Correction		automatic or user selectable value
Endpoint Criteria		fixed mV persistence, relative drift stop or absolute drift stop
Dosing		dynamic with optional pre-dispensing rate
Result Statistic		mean, standard deviation
Clip Lock™:
Dosing Pump Resolution		1/40000 of the burette volume (0.125 µL per dose)
Dosing Pump Accuracy		±0.1% of full burette volume
Syringe		5 mL precision ground glass with PTFE plunger
Valve		motor driven 3-way, PTFE liquid contact material
Tubing		PTFE with light block and thermal jacketing
Dispensing Tip		glass, fixed position, anti-diffusing
Titration Vessel		conical with operation volume between 50-150 mL
Solvent Handling System		sealed system, integrated diaphragm air pump
Electrode:
Type		dual platinum pin, polarisation electrode
Connection		BNC
Polarisation Current		1, 2, 5, 10, 15, 20, 30 or 40 µA
Voltage Range		2 mV to 1000 mV
Voltage Resolution		0.1 mV
Accuracy (@25ºC/77ºF)		±0.1%
External Stirrer:
Type		magnetic, optically regulated, digital stirrer
Speed		200-2000 rpm
Resolution		100 rpm
Peripheral Devices:
PC		easily view, transfer, print or delete methods and reports via HI-900PC application
USB Flash Drive		easily upgrade software or transfer methods and reports between devices using a USB drive
Laboratory Analytical Balance		RS232 to connect any laboratory balance
Printer		print directly from the HI 903 to a printer via parallel port
Monitor		instrument status and titrations can be viewed on a larger screen using any VGA compatible external monitor
Keyboard		alphanumeric text can be entered using an optional PS/2 keyboard
Graphic Display		5.7” (320 x 240 pixel) color LCD
Titration Methods		up to 100 (standard and user) methods
Data Storage		up to 100 complete titration reports and drift rate reports can be stored
GLP Conformity		Good Laboratory Practice and instrument data storage and printing
Languages		English, Portuguese and Spanish
Enclosure Material		ABS plastic and steel
Keypad		polycarbonate
Power Supply		“-02” model: 230VAC, 50/60 Hz;
Operating Environment		10 to 40ºC, up to 95% RH
Storage Environment		-20 to 70ºC, up to 95% RH
Dimensions		390 x 350 x 380 mm (15.3 x 13.8 x 14.9”)
Weight		approximately 10 kg (22 lbs.)