shanghai san-凯时娱乐

sx723 portable ph/conductivity meter
    measurement of parameters such as ph, mv, conductivity, tds, salinity, resistivity and temperature of water solution, the most cost effective portable analytical instrument.

● double-parameter meter, equipped with ph electrode and conductivity electrode, automatic identification of electrode by meter.
● built-in microprocessor chips, intelligent functions such as automatic calibration, automatic temperature compensation, data storage, function set-up, self-diagnose information, automatic power-off and low voltage display.
● automatic identification of 13 ph standard buffer solutions, three options of standard buffer solutions: europe and america series, nist series and china series.
● able to set ph measurement modes of high purity water and pure water with ammonia.
● automatic identification of 8 conductivity standard calibration solutions, two options of standard calibration solutions: europe and america series and china series.
● adopt advanced conductivity measurement technology, use conductivity electrode of constant k=1, only need one point calibration and meet the measurement precision requirement of 0.5μs/cm ~ 200 ms/cm.
● ability to switch among conductivity, tds, salinity and resistivity. multinomial calculation for tds and salinity to ensure the conversion precision of the full scale.
● conductivity measurement mode has the function of non-linear temperature compensation for high purity water.
● meter meets ip57 rating, equipped with calibration solution and portable case.

category product name basic features and specifications

measuring range

(-2.00 ~ 19.99)ph


0.1/0.01 ph


meter:±0.01ph; overall: ±0.02ph

input current

≤2×10-12 a

input impendance

≥1×1012 ω


±0.01 ph/3h
temp. compensation range (0 ~ 100)℃(automatic)

measuring range (mv/orp/eh)

-1999mv ~ 0 ~ 1999mv




meter:±0.1% fs, overall: ±15mv
conductivity measuring range conductivity:(0.00~19.99)μs/cm (20.0~199.9)μs/cm (200~1999)μs/cm (2.00~19.99)ms/cm (20.0~199.9)ms/cm tds: (0 ~ 100)g/l salinity: (0 ~ 100)ppt resistivity:(0 ~ 100)mω·cm


0.01/0.1/1μs/cm 0.01/0.1 ms/cm
accuracy meter:±1.0% fs, overall:±1.5% fs

temp. compensation range

(0 ~ 50)℃(manual)

electrode constant

0.1 / 1 / 10 cm-1

benchmark temperature

25℃、20℃ and 18℃
other technical parameters

data storage

200 groups
storage content series number, measuring value measuring unit and temperature,


two aa batteries (1.5v x2)

size and weight

meter:(65×120×31)mm/180g;suitcase: (360×270×76)mm/1.6kg
quality and safety certification iso9001:2000, ce and cmc
working condition

environment temperature

5 ~ 35 ℃(0.01grade)

environmental humidity


ip rating

ip57 dustproof and waterproof

1. model sx723 ph/mv/conductivity meter 1unit
2. 201t-s plastic ph/atc three-in-one combined electrode 1pc
3. 2301-s plastic conductivity electrode 1pc
4. ph standard buffer solution(ph4.00, ph7.00 and ph10.01/50ml) 1btl/each
5.1413μs/cm conductivity standard solution (50ml) 1pc
6.screw driver 1pc
7. spare aa batteries 2pcs
8. operation manual 1pc
9. carrying case 1unit

accessory category



ph combination electrode

201t-s plastic three-in-one ph electrode

measure ph and temperature simultaneously, atc, suited for general ph measurement, 8 pin conncetor.

2503dt-s glass three-in-one combintion ph electrode

atc, suited for ph measurement of solution under low temperature and pure water, 8 pin connector.

glass flow cell

match 2503dt-s electrode.

orp combination electrode

301pt-s plastic orp combination electrode


suited for general orp measurement, 8 pin connector.

conductivity electrode

2301-s plastic conductivity electrode

k=1.0 cm-1,atc, suited for conductivity measurement of general water solution, 8 pin connector.

djs-0.1-s glass conductivity electrode

k=0.1cm-1,atc, suited for ph measurement of of high purity water, 8 pin connector.

glass flow cell

match djs-0.1-s electrode.

ph buffer

ph4.00 buffer


ph6.86 buffer


ph9.18 buffer


ph7.00 buffer


ph10.01 buffer


conductivity standard

84 μs/cm conductivity standard


1413 μs/cm conductivity standard


12.88 ms/cm conductivity standard


146.6 μs/cm conductivity standard


1408 μs/cm conductivity standard


12.85 ms/cm conductivity standard


electrode soaking solution

ph(orp)combination electrode soaking solution


orp standard solution

222 mv orp standard solution


portable case

small portable case(255×210×50)mm

match single electrode.

big portable case(360×270×76)mm

match multi- electrode