HORIBA COMPACT WATER QUALITY METERS, LACQUA TWIN, MODEL B-731� Only compact meter for a quick measurement sodium ion to calculate into NaCl based salt concentration unlike the conductivity converted meters.
� Flat sensor technology realizes a reliable and direct measurement of a drop of the
sample from 0.3 mL
� IP67 waterproof and dustproof
� Temperature compensation/Auto hold/Auto range change
� Special application packages for crop and soil
Potasium Ion(K+)
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Nitrate Ion(NO3-)
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Calcium Ion(Ca2+)
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Salt (NaCl)
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Model
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B-731
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B-743
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B-751
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B-721
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Measurement principle
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Ion electrode method
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Sample type
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Immersion
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Minimum sample volume
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0.05 mL , 0.3 mL or more
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Measurement
range
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39 to 3900 ppm (mg/L)
(10 -3to 10 -1mol/L)
20 to 2000 kg/10a
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NO3-: 62 to 6200 ppm (mg/L)
(10 -3to 10 -1mol/L)
NO3- -N: 14 to 1400 ppm (mg/L)
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40 to 4000 ppm (mg/L)
(10 -3to 10 -1mol/L)
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0.1 to 10％by weight
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Display range
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0 to 9900 ppm (mg/L)
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0.00 to 25％ by weight
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Range and Resolution
(Valid numbers)
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① 0 to 1.0 ppm: 0.1 ppm
② 0 to 99 ppm: 1 ppm
③ 100 to 990 ppm: 10 ppm
④ 1000 to 9900 ppm: 100 ppm
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① 0.00 to 0.99%: 0.01% by weight
② 1.0 to 9.9%: 0.1% by weight
③ 10 to 25%: 1% by weight
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Calibration
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Two-point
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Accuracy
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±10% of reading value
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±20% of reading value
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±10% of reading value
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Functions
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・Auto range change; ・Temperature compensation; ・IP67 Water/Dust proof ・Auto hold; ・Automatic power off (30 minutes)
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Display
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Custom (monochrome) Digital LCD
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Operating temperature/
humidity
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5 to 40˚C, 85% or less in relative humidity (no condensation)
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Power
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CR2032 batteries (x2)
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Battery life
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Approx. 400 hours in continuous use
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Main Material
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ABS epoxy
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Dimensions/Mass
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164 mm × 29 mm × 20 mm (excluding projections)/Approx. 50 g (meter only, without batteries, B-771 approx. 45 g)
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Accessories included
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Standard solution
(150 ppm & 2000 ppm) (14mL),
5 pieces of Sampling sheet B
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Standard solution
(0.5%, 5%) (14 mL),
5 pieces of Sampling sheet
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ATTN: Ms Cao Xuân Yến/ Product Manager
Tel: 0989 778 349
Email: xuanyen611116@gmail.com
Skype: xuanyen611116
