The HI84531 is an easy to use, fast and affordable automatic mini titrator designed for testing titratable alkalinity levels in water. Based on an acid base titration method, this mini titrator uses an optimized pre-programmed method of analysis with a powerful algorithm that determines the completion of the titration reaction by the use of a glass body pH electrode.

• Piston driven pump for accurate dynamic dosing
• Complete with glass double junction pH electrode
• Pre-standardized titrant and pre-measured reagent
• Supplied with the HI1131B refillable, double junction, combination pH electrode
• Built-in stirrer is automatically maintained at a speed of 600 rpm, regardless of the viscosity of the solution being titrated

This mini titrator is supplied complete with all the materials necessary to perform low and high range measurements of alkalinity in water. All chemicals are premixed and prepackaged including standardized titrants, reagents and pump calibration solution. There is no need for volumetric glassware or analytical balances.

Specifications:
Range: Low Range: 30.0 to 400.0 mg/L; 0.6 to 8.0 meq/L; High Range: 300 to 4000 mg/L; 6.0 to 80.0 meq/L
Resolution: Low Range: 0.1 mg/L (ppm); 0.1 meq/L; High Range: 1 mg/L (ppm); 0.1 meq/L
Accuracy (@25ºC/77ºF): Low Range: ±1 mg/L or 3% of reading, whichever is greater; High Range: ±10 mg/L or 3% of reading, whichever is greater
Sample Volume: 50 mL
Methods: acid-base titration (strong alkalinity/total alkalinity)
Principle: endpoint titration: 8.30 pH (phenolphthalein) / 4.50 pH (bromcresol green-methyl red)
Pump Speed: 10 mL/min
Stirring Speed: 600 rpm
pH Range: -2.0 to 16.0 pH; -2.00 to 16.00 pH
pH Resolution: 0.1 pH / 0.01 pH
pH Accuracy (@25ºC/77ºF): ±0.01 pH
pH Calibration: one, two or three-point calibration; four available buffers (4.01, 7.01, 8.30, 10.01)
Temperature Compensation: manual or automatic
mV Range: -2000.0 to 2000.0 mV
mV Resolution: 0.1 mV
mV Accuracy (@25ºC/77ºF): ±1.0 mV
Temperature Range: -20.0 to 120.0°C; -4.0 to 248.0°F; 253.2 to 393.2 K
Temperature Resolution: 0.1°C; 0.1°F; 0.1K
Temperature Accuracy (@25ºC/77ºF): ±0.4°C; ±0.8°F; ±0.4 K
Logging Data: up to 400 ( 200 titrations, 200 pH/mV readings)
Environment: 0 to 50°C (32 to 122°F); RH max 95% non-condensing
Power Supply: 12 VDC adapter (included)
Dimensions: 235 x 200 x 150 mm (9.2 x 7.9 x 5.9”)
Weight: 1.9 kg (67.0 oz.)

HI84531 is supplied with HI1131B pH electrode, HI7662-M temperature probe, HI84531-50 low range titrant (120 mL), HI84531-51 high range titrant (120 mL), HI84531-55 calibration standard (230 mL), 100 mL beakers (2), dosing pump valve, 5 mL syringe, 2000 µL automatic pipette with two plastic tips, tube set (aspiration tube with titrant bottle cap and dispensing tube with tip), stir bar, power adapter, instruction manual and quality certificate.

Warranty: meter 2 years, probe 6 months