Alkalinity Checker is Here!

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cmor1701d

Aquarium Advice Addict
Joined
Feb 17, 2003
Messages
7,815
Location
Belle Mead, NJ
Just got this email from Hanna Instruments

The HI 755 Alkalinity Checker HC features an accuracy of ±5% of reading ±5 ppm and uses the colorimetric method and only sells for $49.50. Visit www.hannachecker.com to get yours today!

It reads in ppm so divided by 50 (or multiply by .02) for meq/L or multiply the meq/L rading by 2.8 for dKH

e.g the video shows a reading of 170 (ppm)
170 ppm / 50 = 3.4 meq/L * 2.8 = 9.52 dKH

They changed the auto time off from 2 minutes to 10 minutes.

SPECIFICATIONS HI 755 (Alkalinity)
Range​
0 to 300 ppm (mg/L)

Resolution​
1 ppm (mg/L)

Accuracy​
±5% of reading ±5 ppm @ 25°C

Light Source​
LED @ 610 nm

Light Detector​
Silicon photocell

Environment​
0 to 50°C (32 to 122°F); RH max 95% non-condensing

Battery Type​
(1) 1.5V AAA

Auto-off​
After 10 minutes of non-use

Dimensions​
81.5 x 61 x 37.5 mm (3.2 x 2.4 x 1.5”)

Weight​
64 g (2.25 oz.)

Method Colorimetric method


I love the phosphate checker (though I wish it had the 10 minute time out), but not sure how I feel about this over a Salifert kit.

If I buy one, I'll post a review.
 
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