Desktop multi-parameter water quality tester

ERUN-ST7
Widely applicable to the determination of drinking water, surface water and sewage.
ERUN-ST7
ERUN-ST7
ERUN-ST7
ERUN-ST7
ERUN-ST7
ERUN-ST7
Introduction

Brand: Erun environmental protection

Name: Laboratory bench-top multi-parameter water quality analysis tester

Model number: ERUN-ST7

Parameters: COD, ammonia nitrogen, total phosphorus, total nitrogen, hardness, chloride ion, turbidity, dissolved oxygen, conductivity, PH, etc.

ERUN-ST7, a desktop multi-parameter water quality analysis tester produced by Erun, contains optical method and electrode method (PH, conductivity, TDS, dissolved oxygen and water temperature), and users can be freely combined according to their needs. Widely applicable to the determination of drinking water, surface water and sewage.

Parameters
  • Measurement parameters: COD, ammonia nitrogen, total phosphorus, total nitrogen, copper, iron, nickel, hexavalent chromium, phosphate, nitrite, PH, residual chlorine and other more than 80 kinds of parameters, the user can customize the parameters according to the needs.

  • Wavelength: 340nm, 420nm, 440nm, 470nm, 520nm, 540nm, 560nm, 610nm, 630nm, 660nm, 680nm, 700nm is optional in the above range.

  • PH, conductivity and dissolved oxygen can be selected electrode method according to the need.

  • Maximum absorbance error: 0.005A 

  • Absorbance range: -2.000 to 2.000

  • Reproducibility: ≤2%

  • Optical stability: The light absorption value of the instrument is less than 0.002A in 20min

  • Display: Color touch screen, switch between Chinese and English

  • Reading mode: concentration, absorbance, light transmittance

  • Colorimetric mode: color tube (Ф 16mm, Ф 25mm) and cuvette

  • Overall dimensions: 400mm ✖300mm✖ 140mm

  • Weight: 2.6kg

  • Host power consumption: <10W

  • measuring range :

numberparameter

measurement range

uniterror
1

COD

 (chromium method low range)

5-200 or 5-150mg/L5%

COD

(chromium method high range)

200-2000 or 150-2000mg/L5%
2Ammonia nitrogen(low range)0.02-5.00mg/L3%(F.S)
Ammonia nitrogen(high range)5.00-25.00mg/L3%(F.S)
3Total phosphorus (low range0.02-2.00mg/L5%(F.S)
Total phosphorushigh range2.00-10.00mg/L5%(F.S)
4Total nitrogen(low range0.10-10mg/L5%(F.S)
Total nitrogenhigh range10-100mg/L5%(F.S)
5CODMn (permanganate index )0.00-10.00mg/L0.2or5%
6 Residual chlorine (low range0.02-2.00mg/L0.1or5%
Residual chlorine (high range)2.00-10.00mg/L5%
7Total chlorine(low range0.02-2.00mg/L0.1or5%
  Total chlorinehigh range2.00-10.00mg/L5%
8Chlorine dioxide (low range0.05-2.00mg/L0.2or5%
Chlorine dioxide high range2.00-20.00mg/L5%
9Sulfate5-200mg/L5%
10Nitrate (nitrogen)0.02-10.0mg/L0.1or5%
11Phosphate (low range0.01-10.0mg/L0.2or5%
Phosphate high range10.0-50.0mg/L5%
12Nitrite nitrogen (low range0.02-1.0mg/L0.05or5%
Nitrite nitrogenhigh range1.0-5.0mg/L5%
13Sulfide0.005-1.000mg/L5%(F.S)
14Fluoride0.05-2.0mg/L5%(F.S)
15Cyanide 0.01-0.50mg/L5%(F.S)
16Bromide0.10-5.00mg/L5%(F.S)
17Formaldehyde0.05-2.5mg/L5%(F.S)
18Volatil (low range)0.20-5.0mg/L5%(F.S)
Volatil (high range5.0-10.0mg/L5%(F.S)
19Hydrazine0.01-0.50mg/L5%(F.S)
20

Benzoamine compound

(low range)

0.03-1.0mg/L5%(F.S)

   Benzoamine compounds

(high range)

1.0-5.0mg/L5%(F.S)
21Silica0.01-5.00mg/L5%(F.S)
22Total alkalinity(low range0-100mg/L5%(F.S)
Total alkalinityhigh range100-1000mg/L5%(F.S)
23Total hardness(low range0.1-5.0mg/L5%(F.S)
Total hardnesshigh range5.0-200.0mg/L5%(F.S)
24Chloride ion (chloride)0.20-100.0mg/L5%(F.S)
25Copper (Cu)(low range
0.02-1.0mg/L5%(F.S)
Copper (Cu)high range1.0-10.0mg/L5%(F.S)
26Zinc (Zn) 0.2-5.0mg/L5%(F.S)
27Nickel (Ni) (low range0.02-0.50mg/L5%(F.S)
Nickel (Ni)(high range
0.50-1.00mg/L5%(F.S)
Nickel (Ni)0.02-10.00mg/L5%(F.S)
28Ferrum(Fe)(low range0.0-5.0mg/L5%(F.S)
Ferrum(Fe)high range5.0-10.0mg/L5%(F.S)
29Hexavalent chromium0.01-1.00mg/L5%(F.S)
30Cadmium(Cd)0.05-0.50mg/L5%(F.S)
31Manganese (Mn)  (low range)0.01-0.10mg/L5%(F.S)
Manganese (Mn)  (high range)0.10-1.0mg/L5%(F.S)
Manganese (Mn) 0.02-5.00mg/L5%(F.S)
32Total chromium0.02-1.0mg/L5%(F.S)
33Aluminium (Al)(low range
0.01-0.40mg/L5%(F.S)
Aluminium (Al)high range0.40-4.00mg/L5%(F.S)
34Silver0.01-1.00mg/L5%(F.S)
35Molybdenum0.05-1.00mg/L5%(F.S)
36Arsenic(low range
0.004-0.100mg/L5%(F.S)
 Arsenichigh range0.100-0.500mg/L5%(F.S)
37Beryllium (Be) 0.001-0.10mg/L5%(F.S)
38Boron (B) 0.10-2.00mg/L5%(F.S)
39Mercury (Hg)0.002-0.50mg/L5%(F.S)
40Lead0.01-0.50mg/L5%(F.S)
41Chrominance (low range5-50PCU3%(F.S)
  Chrominance (high range50-500PCU3%(F.S)
42Turbidity0-400NTU≤2%(F.S)
43Suspended solids5-1000mg/L≤2%(F.S)
44PH(Electrode method)0.00-14.00PH±0.1
PH(Colorimetry)5.00-8.00
PH0.1±0.1
45Dissolved oxygen  (Colorimetry)0.1-10.0mg/L0.1±5%

Dissolved oxygen 

(Electrode method)

0.-20.0
mg/L
±0.2
46Ozone0.01-2.5mg/L5%(F.S)
47Anionic surfaceactive agent0.01-1.0mg/L5%(F.S)
48Available chlorine0.0-100.0mg/L5%(F.S)
49Chlorite0.00-20.00mg/L5%(F.S)
50Stibonium0.05-10.0mg/L5%(F.S)
51Conductivity (Electrode method)0.00µs/cm-199.9ms/cmms/cm±0.1 (F.S)
52Carbamide0.00-4.00mg/L8%(F.S)
53Cyanuric acid 5-200mg/L5%(F.S)
54Silicate0.01-5.00mg/L5%(F.S)
55Temperature(0-99℃)±1
56Ammonium ion0.02-25.00mg/L3%(F.S)
57Ferrous(low range0.0-5.00mg/L5%(F.S)
Ferroushigh range
5.00-10.00mg/L5%(F.S)
58
TDS(Electrode method
0.00µs/cm-199.9ms/cm
g/L±0.5%
Features
  • It can detect the concentration, absorbance and transmittance of nearly 100 parameters in water quality, and can store, print, query and upload them to the computer.

  • The measurement wavelength is automatically selected.

  • The instrument is operated by large screen color touch screen, with friendly operation interface, with the help of operation guide, and explains various functional operations.

  • In addition to the factory curve up to 250 curves, the user can add 3500 curves, can calibrate the curves, and store into the instrument.

  • Store 100,000 records (including parameter name, concentration, unit, test time, operator number, etc.).

  • The instrument measurement method can be a straight line method or a broken line method. The broken line method can measure some parameters with poor linear accuracy.

  • With the one-click recovery function, the one-click recovery can be realized when the factory curve and user curve data records are lost due to accidents.

  • The instrument can take backup measures for the curve and data records determined by the user, and can be restored in case of accidental loss.

  • The instrument has a variety of security measures, can set the boot and system setting input password, to avoid other personnel to the instrument set misoperation.

  • The light intensity can be adjusted, divided into 16 levels, arbitrary setting, can effectively solve the measurement range expansion problem caused by the strength of the signal.

  • Can be used to the curve query, in addition to the curve equation, can also query the calibration of the standard value of each standard substance and the corresponding absorbance and calibration time and calibration personnel number, fully reproduce the state of the calibration.

  • When recording the query, you can do a single print or page printing.

  • The system has bilingual function and can be switched between Chinese and English.

+8602985515255
yrhb@erunwas.com