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HI 84442

Total Titratable Very Low Alkalinity Titrator

User-friendly interface
Dedicated HELP key
Simple to operate
Log on demand up to 100 samples (50 for pH; 50 for titration)
GLP features
One, two or three point calibration
pH temperature compensation

The HI 84442 is a dedicated mini titrator and pH meter designed for very low levels of alkalinity displayed as 5.0 to 20.00 mg/L as CaCO3 or 0.1 to 0.4 meq/L as CaCO3.  It utilizes an electrometric titration with a pH electrode to determine the total titratable alkalinity in water. As titrant is slowly added to the sample solution the pH and temperature are carefully monitored. The software analyzes the resulting pH curve and determines the volume of titrant required to reach the endpoint of 4.5 pH. (known as bromcresol green alkalinity).

The dispensed titrant volume is used to automatically calculate the water alkalinity, which can be displayed in mg/L CaCO3 or meq/L. Titrations are conducted using the reagent HI 84442-50.

Order Information:
HI 84442-01 (115V) and HI 84442-02 (230V) are supplied with HI 84442-50 titrant solution (100 mL), HI 84442-55 pump calibration solution (230 mL), HI 1131B pH electrode, HI 7071 filling solution (30 mL), HI 7662-M temperature probe, HI 7061 cleaning solution, HI 7004M pH 4.01 buffer solution (230 mL), HI 70083M pH 8.30 buffer solution (230 mL), HI 7010M pH 10.01 buffer solution (230 mL), 100 mL beakers (2), tube set with dispensing tip, medium stir bars (2), 12 VDC adapter, Instructions and quick reference guide.

Specifications

Range Total Titratable Alkalinity
(Very Low/Ultra Low Range) mg/L (ppm) : 3.00-10.00 mg/L (ppm) as CaCO3
meq/L : 0.06-0.20 meq/L
pH -2.0 to 16.0 pH / -2.00 to 16.00 pH
Temperature -20.0 to 120.0 °C (-4.0 to 248.0 °F)
Resolution Total Titratable
Alkalinity (VL/UL) 0.01 mg/L; 0.01 meq/L
pH 0.1 pH / 0.01 pH
Temperature 0.1 °C
Accuracy
(@25ºC) Total Titratable
Alkalinity (VL/UL) 5% of reading
pH ±0.01 pH
Temperature ±0.4 °C without probe error
Titration
Method   acid-base titration (total alkalinity)
Titration
Principle   endpoint titration: 4.5 pH
Pump Volume   0.5 mL/min
Stirring Speed   700 rpm
pH Temp.
Compensation   manual or automatic from: -20 to 120 °C
(-4 to 248 °F)
Logging Titration up to 50 samples
pH up to 50 samples
pH Calibration   one, two or three point calibration; three available buffers (4.01; 8.30; 10.01)
pH Electrode   HI 1131B glass body pH electrode with BNC connector and 1 m (3.3’) cable
Temperature
Probe   HI 7662-M stainless steel temperature probe with 1 m (3.3’) cable (included)
Environment   0 to 50 °C (32 to 122 °F); max 95% RH non-condensing
Power Supply   12 VDC power adapter
Dimensions   208 × 214 × 163 mm (8.2 × 8.4 × 6.4”) (with beaker)
Weight   2200 g (77 oz.)

Accessories

Accessories
HI 70483T Replacement Tubing Set
HI 731319 Micro Stir Bars for Magnetic Stirrers
HI 731342 2000 µL Graduated Pipette
HI 731352 Plastic Tip Set for 2000 µL Graduated Pipette
HI 731341 1000 µL Graduated Pipette
HI 731351 Plastic Tip Set for 1000 µL Graduated Pipette
Reagents & Standards
HI 84442-50 Titrant Solution
HI 84442-55 Pump Calibration Solution