Spesifikasi HI90302
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.) |