Brand: Erun
INTELLIGENT LABORATOR multi-parameter water quality tester
number: ERUN-ST7
Parameters: ammonia nitrogen, PH, hardness.
It can be used for intelligent laboratory water quality monitoring, to meet the water supply system water quality indicators testing, in line with the standard.
AMMONIA (AS N),TOTAL CHLORINE, FREE CHLORINE, PERMANGANATE INDEX, IRON, MANGANESE, CHROMIUM (VI), CHLORIDE, NITRATE-N (AS N), NITRITE-N (AS N), FLUORIDE, SULFATE, ALUMINUM, TOTAL HARDNESS, TOTAL ALKALINITY, COLORITY, TURBIDITY, PH, WATER TEMPERATURE, DISSOLVED TOTAL SOLIDS, DISSOLVED OXYGEN, ARSENIC, CADMIUM, COPPER, ZINC, LEAD
| number | parameter | measurement range | unit | error |
| 1 | COD (chromium method low range) | 5-200 or 5-150 | mg/L | 5% |
COD (chromium method high range) | 200-2000 or 150-2000 | mg/L | 5% | |
| 2 | Ammonia nitrogen(low range) | 0.02-5.00 | mg/L | 3%(F.S) |
| Ammonia nitrogen(high range) | 5.00-25.00 | mg/L | 3%(F.S) | |
| 3 | Total phosphorus （low range） | 0.02-2.00 | mg/L | 5%(F.S) |
| Total phosphorus（high range） | 2.00-10.00 | mg/L | 5%(F.S) | |
| 4 | Total nitrogen（low range） | 0.10-10 | mg/L | 5%(F.S) |
| Total nitrogen（high range） | 10-100 | mg/L | 5%(F.S) | |
| 5 | CODMn (permanganate index ) | 0.00-10.00 | mg/L | 0.2or5% |
| 6 | Residual chlorine （low range） | 0.02-2.00 | mg/L | 0.1or5% |
| Residual chlorine (high range) | 2.00-10.00 | mg/L | 5% | |
| 7 | Total chlorine（low range） | 0.02-2.00 | mg/L | 0.1or5% |
| Total chlorine（high range） | 2.00-10.00 | mg/L | 5% | |
| 8 | Chlorine dioxide （low range） | 0.05-2.00 | mg/L | 0.2or5% |
| Chlorine dioxide （high range） | 2.00-20.00 | mg/L | 5% | |
| 9 | Sulfate | 5-200 | mg/L | 5% |
| 10 | Nitrate (nitrogen) | 0.02-10.0 | mg/L | 0.1or5% |
| 11 | Phosphate （low range） | 0.01-10.0 | mg/L | 0.2or5% |
| Phosphate （high range） | 10.0-50.0 | mg/L | 5% | |
| 12 | Nitrite nitrogen （low range） | 0.02-1.0 | mg/L | 0.05or5% |
| Nitrite nitrogen（high range） | 1.0-5.0 | mg/L | 5% | |
| 13 | Sulfide | 0.005-1.000 | mg/L | 5%（F.S) |
| 14 | Fluoride | 0.05-2.0 | mg/L | 5%(F.S） |
| 15 | Cyanide | 0.01-0.50 | mg/L | 5%(F.S) |
| 16 | Bromide | 0.10-5.00 | mg/L | 5%(F.S) |
| 17 | Formaldehyde | 0.05-2.5 | mg/L | 5%(F.S) |
| 18 | Volatil (low range) | 0.20-5.0 | mg/L | 5%(F.S) |
| Volatil (high range） | 5.0-10.0 | mg/L | 5%(F.S) | |
| 19 | Hydrazine | 0.01-0.50 | mg/L | 5%(F.S) |
| 20 | Benzoamine compounds (low range) | 0.03-1.0 | mg/L | 5%(F.S) |
Benzoamine compounds (high range) | 1.0-5.0 | mg/L | 5%(F.S) | |
| 21 | Silica | 0.01-5.00 | mg/L | 5%(F.S) |
| 22 | Total alkalinity（low range） | 0-100 | mg/L | 5%(F.S) |
| Total alkalinity（high range） | 100-1000 | mg/L | 5%(F.S) | |
| 23 | Total hardness（low range） | 0.1-5.0 | mg/L | 5%(F.S) |
| Total hardness（high range） | 5.0-200.0 | mg/L | 5%(F.S) | |
| 24 | Chloride ion (chloride) | 0.20-100.0 | mg/L | 5%(F.S) |
| 25 | Copper (Cu)（low range） | 0.02-1.0 | mg/L | 5%(F.S) |
| Copper (Cu)（high range） | 1.0-10.0 | mg/L | 5%(F.S) | |
| 26 | Zinc (Zn) | 0.2-5.0 | mg/L | 5%(F.S) |
| 27 | Nickel (Ni) （low range） | 0.02-0.50 | mg/L | 5%(F.S) |
| Nickel (Ni)（high range） | 0.50-1.00 | mg/L | 5%（F.S) | |
| Nickel (Ni) | 0.02-10.00 | mg/L | 5%（F.S) | |
| 28 | Ferrum(Fe)（low range） | 0.0-5.0 | mg/L | 5%（F.S) |
| Ferrum(Fe)（high range） | 5.0-10.0 | mg/L | 5%(F.S) | |
| 29 | Hexavalent chromium | 0.01-1.00 | mg/L | 5%(F.S) |
| 30 | Cadmium(Cd) | 0.05-0.50 | mg/L | 5%(F.S) |
| 31 | Manganese (Mn) (low range) | 0.01-0.10 | mg/L | 5%(F.S) |
| Manganese (Mn) (high range) | 0.10-1.0 | mg/L | 5%(F.S) | |
| Manganese (Mn) | 0.02-5.00 | mg/L | 5%(F.S) | |
| 32 | Total chromium | 0.02-1.0 | mg/L | 5%(F.S) |
| 33 | Aluminium (Al)（low range） | 0.01-0.40 | mg/L | 5%(F.S) |
| Aluminium (Al)（high range） | 0.40-4.00 | mg/L | 5%(F.S) | |
| 34 | Silver | 0.01-1.00 | mg/L | 5%(F.S) |
| 35 | Molybdenum | 0.05-1.00 | mg/L | 5%(F.S) |
| 36 | Arsenic（low range） | 0.004-0.100 | mg/L | 5%(F.S) |
| Arsenic（high range） | 0.100-0.500 | mg/L | 5%(F.S) | |
| 37 | Beryllium (Be) | 0.001-0.10 | mg/L | 5%(F.S) |
| 38 | Boron (B) | 0.10-2.00 | mg/L | 5%(F.S) |
| 39 | Mercury (Hg) | 0.002-0.50 | mg/L | 5%(F.S) |
| 40 | Lead | 0.01-0.50 | mg/L | 5%(F.S) |
| 41 | Chrominance (low range） | 5-50 | PCU | 3%(F.S) |
| Chrominance (high range） | 50-500 | PCU | 3%(F.S) | |
| 42 | Turbidity | 0-400 | NTU | ≤2%(F.S) |
| 43 | Suspended solids | 5-1000 | mg/L | ≤2%(F.S) |
| 44 | PH（Electrode method） | 0.00-14.00 | PH | ±0.1 |
| PH（Colorimetry） | 5.00-8.00 | PH | 0.1±0.1 | |
| 45 | Dissolved oxygen (Colorimetry) | 0.1-10.0 | mg/L | 0.1±5% |
Dissolved oxygen (Electrode method) | 0.-20.0 | mg/L | ±0.2 | |
| 46 | Ozone | 0.01-2.5 | mg/L | 5%(F.S) |
| 47 | Anionic surfaceactive agent | 0.01-1.0 | mg/L | 5%(F.S) |
| 48 | Available chlorine | 0.0-100.0 | mg/L | 5%(F.S) |
| 49 | Chlorite | 0.00-20.00 | mg/L | 5%(F.S) |
| 50 | Stibonium | 0.05-10.0 | mg/L | 5%(F.S) |
| 51 | Conductivity (Electrode method) | 0.00µs/cm-199.9ms/cm | ms/cm | ±0.1 (F.S) |
| 52 | Carbamide | 0.00-4.00 | mg/L | 8%(F.S) |
| 53 | Cyanuric acid | 5-200 | mg/L | 5%(F.S) |
| 54 | Silicate | 0.01-5.00 | mg/L | 5%(F.S) |
| 55 | Temperature | （0-99℃） | ℃ | ±1 |
| 56 | Ammonium ion | 0.02-25.00 | mg/L | 3%(F.S) |
| 57 | Ferrous（low range） | 0.0-5.00 | mg/L | 5%（F.S) |
| Ferrous（high range） | 5.00-10.00 | mg/L | 5%（F.S) | |
| 58 | TDS（Electrode method） | 0.00µs/cm-199.9ms/cm | g/L | ±0.5% |
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.
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.
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 system has bilingual function and can be switched between Chinese and English.
