EN
Portable multi-parameter water quality tester (combine electrode method and spectrophotometry method)
All testing items are based on national industry standard, and the instrument adopts LIANHUA's self-developed LHOS operating system. The standards are based on COD - "HJ/T399-2007", ammonia nitrogen - "HJ535-2009", total phosphorus - "GB11893-89", and dissolved oxygen - "HJ506-2009". The instrument has powerful detection function, with integrated dual temperature block, digestion and colorimeter are together in one, retains the colorimetric function of the dual diameter rotating tube, and has the on-site law enforcement function of taking photos and videos, making it a powerful assistant for comprehensive law enforcement in the field.
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Instrument introduction
This is a portable instrument with a built-in high-capacity lithium battery that supports the detection of pH, dissolved oxygen, conductivity, TDS, salinity, turbidity, COD, ammonia nitrogen, total phosphorus, total nitrogen, suspended solids, chromaticity, heavy metals, organic salts, and other indicators. All testing items are based on national industry standards, and the instrument adopts LIANHUA's self-developed LHOS operating system. The instrument has a powerful detection function, with integrated dual-temperature block digestion, a colorimeter, and electrodes together in one; it retains the colorimetric function of the dual-diameter rotating tube and has the on-site law enforcement function of taking photos and videos, making it a powerful assistant for comprehensive law enforcement in the field.
Functional characteristic
1. Electrode spectrophotometry: basically covering all needs of outdoor water quality testing, much convenient;
2, 360 ° rotation colorimetric: supports diameter 25mm and 16mm round tubes for rotation colorimetric, and supports length 10-30mm rectangular cuvette for colorimetric;
3. 720P high-definition camera: Take on-site photos or video recordings to record on-site inspection information.
4. There are 12 pieces of well/positions for dual-temperature block digestion. Two temperature zones are independently controlled, suitable for multi-indicator and batch item detection.
5. Outdoor testing without battery life anxiety: Equipped with a built-in 19.2 Ah high-capacity lithium battery, it can last up to 8 hours under comprehensive working conditions.
6. Standard curve formulation and calibration: Custom calibration of coefficient curve and sample curves is supported;
7. LHOS operating system: customized based on Android, with a simple and user-friendly interface and powerful data analysis;
8. Digital electrodes are precise and stable, with faster signal transmission and processing efficiency, strong anti-interference ability, and precise measurement values.
9. Light Source Life: ≥ 100000
10. Stability: ≤ 0.005A / H
11. Measurement Precision: ≤ ± 5% or ± 10% F.S
Technical Parameters
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Instrument name |
Portable multi-parameter water quality tester |
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Model |
LH-C700(F) (test all below parameters) |
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Measuring range |
Spectrophotometry method |
COD:(0-15000)mg/L Ammonia nitrogen：(0-160)mg/L Total phosphorus：(0-100)mg/L Total nitrogen：(0-150)mg/L Other parameter....... |
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Electrode method |
pH:(0-14)pH Dissolved oxygen：(0-20)mg/L or (0-200)% saturation EC：(0.01-100)mS/cm ORP:(-999~999)mV Turbidity：(0-1000)NTU
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Error |
Spectrophotometry method |
≤±5%；other parameter：≤±10% |
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Electrode method |
pH:±0.02pH；DO：±1%；EC：±1%；ORP:±20mV；turbidity：±5% or 0.3NTU |
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Resolution ratio |
Spectrophotometry method |
0.001Abs |
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Electrode method |
pH:0.01；DO：0.01；ORP:0.01；turbidity：0.1NTU；EC：0.1μS/cm or 0.01mS/cm TDS：0.01mg/L；salinity：0.01ppt（‰） |
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Curve No. |
665 |
Repeatability |
≤±3% |
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Colorimetric method |
Φ 16mm/25mm round tube or 10mm/30mm length rectangular cuvette |
Response time |
pH, ORP, turbidity, 5 second. DO, EC, 10 second |
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Electrode line length |
3/5m； can customize |
Parameter switch |
automatic |
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Temp. range |
Room temperature-190℃ |
Temp. error |
<±2℃ |
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Temperature field uniformity |
≤2℃ |
Digestion mode |
10 preset modes+5 custom modes |
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Timing range |
1-600 min |
Timing accuracy |
0.2 seconds/hour |
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Display screen |
7 inches; 1024 x 600 touch screen |
Camera resolution |
1080 x 720 (720P full HD) |
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Data storage |
Data: 50 million sets/video: 1000 minutes (60 seconds per video) |
Battery capacity |
24V 19.2Ah |
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Charging method |
AC 220V |
Printer |
Thermal line printer |
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Host weight |
10.5kg |
Host size |
(430×345×188)mm |
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Weight of electrode box |
6kg |
Size of electrode box |
(479×387×155)mm |
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Ambient temperature |
(5-40)℃ |
Environmental humidity |
≤85%(non-condensing ) |
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Rated voltage |
24V |
Power dissipation |
180W |
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All parameters
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Parameter |
Analysis method |
Test range(mg/L) |
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pH |
Digital electrode method pH:±0.02pH；DO：±1%；EC：±1%；ORP:±20mV；Turbidity：±5% or 0.3NTU；TDS:±1%；salinity: ±1% |
0-14pH |
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Dissolved oxygen |
0-20 |
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Conductivity |
0.01-100mS/cm |
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ORP |
-999-999mV |
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Turbidity |
0-1000NTU |
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TDS range |
(5-50000)mg/L |
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Salinity |
(0.01-35)ppt（‰） |
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COD |
Rapid digestion spectrophotometry |
0-15000 |
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Permanganate index |
Potassium permanganate oxidation spectrophotometry |
0.5-5 |
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Ammonia nitrogen - Nessler's |
Nessler's reagent spectrophotometry |
0-200(subsection) |
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Ammonia nitrogen salicylic acid |
Salicylic acid spectrophotometric method |
0.02-50 |
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Total phosphorus ammonium molybdate |
Ammonium molybdate spectrophotometric method |
0-12(subsection) |
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Total phosphorus vanadium molybdenum yellow |
Vanadium molybdenum yellow spectrophotometric method |
2-100 |
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Total nitrogen |
Color changing acid spectrophotometry |
1-150 |
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Chroma |
Platinum cobalt color series |
0-500Hazen |
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Suspended solid |
Direct colorimetric method |
0-1000 |
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Copper |
BCA photometry |
0-50 |
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Diketoxime spectrophotometric method |
0.04-80 |
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Iron |
Phenanthroline spectrophotometric method |
0-5 |
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Nickel |
Dimethylglyoxime spectrophotometric method |
0.1-40 |
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dimethylglyoxime |
0.04-60 |
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Hexavalent chromium |
Diphenylcarbazide spectrophotometric method |
0.01-5 |
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Total chromium |
Diphenylcarbazide spectrophotometric method |
0.01-5 |
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Phenylhydrazine spectrophotometric method |
0.01-10 |
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Lead |
Dimethyl phenol orange spectrophotometric method |
0.05-50 |
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Zinc |
Zinc reagent spectrophotometry |
0.1-10 |
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Cadmium |
Dithizone spectrophotometric method |
0.01-5 |
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Manganese |
Potassium periodate spectrophotometric method |
0.01-50 |
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Silver |
Cadmium reagent 2B spectrophotometric method |
0-8 |
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Antimony |
5-Br-PADAP spectrophotometry |
0-12 |
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Cobalt |
5-Chloro-2- (pyridylazo) -1,3-diaminobenzene spectrophotometric method |
0.01-10 |
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Nitrate nitrogen |
Color changing acid spectrophotometry |
0-250 |
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Nitrite nitrogen |
Naphthyl ethylenediamine hydrochloride spectrophotometric method |
0.01-6 |
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Sulfide |
Methylene blue spectrophotometry |
0.02-20 |
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Sulfate |
Barium chromate spectrophotometric method |
5-2500 |
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Phosphate |
Ammonium molybdate spectrophotometric method |
0.01-25 |
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Vanadium molybdenum yellow spectrophotometric method |
6-3000 |
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Fluoride |
Fluorine reagent spectrophotometry |
0.05-20 |
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Cyanide |
Barbituric acid spectrophotometry |
0.004-5 |
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Free chlorine |
N. N-diethyl-1.4 phenylenediamine spectrophotometric method |
0.1-15 |
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0.05-50 |
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Total chlorine |
N. N-diethyl-1.4 phenylenediamine spectrophotometric method |
0.1-15 |
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0.05-50 |
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Chlorine dioxide |
DPD spectrophotometry |
0.1-50 |
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Ozone |
Indigo spectrophotometry |
0.01-1.25 |
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Silicon dioxide |
Silicon molybdenum blue spectrophotometry |
0.05-40 |
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Formaldehyde |
Acetylacetone spectrophotometric method |
0.05-50 |
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Aniline |
Naphthyl ethylenediamine hydrochloride azo spectrophotometric method |
0.03-20 |
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Nitrobenzene |
Determination of total nitro compounds - spectrophotometric method |
0.05-25 |
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Volatile phenol |
4-aminoantipyrine spectrophotometric method |
0.01-25 |
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Anionic surfactants |
Methylene blue spectrophotometry |
0.015-20 |
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Unsymmetrical dimethylhydrazine |
Sodium aminoferrocyanide spectrophotometric method |
0.05-20 |
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Hydrazine (hydrazine) |
Dimethylaminobenzaldehyde spectrophotometric method |
0.005-10 |
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Methyl hydrazine |
Dimethylaminobenzaldehyde spectrophotometric method |
0.015-25 |
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Total alkalinity |
Methyl orange spectrophotometric method |
20-400 |
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Magnesium hardness |
Calcium magnesium reagent spectrophotometric method |
0.1-80 |
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Calcium hardness |
Calcium magnesium reagent spectrophotometric method |
0.1-80 |
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Total iron |
Phenanthroline spectrophotometric method |
0.2-100 |
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Volatile fatty acids |
Esterification spectrophotometry |
20-3600 |
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Chloride |
Mercury thiocyanate high-speed iron spectrophotometric method |
0.1-25 |
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Molybdate |
Determination of molybdate content in industrial circulating cooling water - thiocyanate spectrophotometric method |
0.6-50 |
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Aluminum |
Standard test methods for drinking water, Part 6: Metallic and non-metallic indicators |
0.01-0.5 |
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Cyanuric acid |
Determination of Cyanuric Acid in Swimming Pool Water: Turbidity Method |
1.45-50 |
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Urea |
Diacetyl oxime thiosemicarbazide spectrophotometric method |
0. 2-6 |
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Total Titanium |
Diantipyrylmethane spectrophotometric method |
0.01-5 |
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Titanium |
Diantipyrylmethane spectrophotometric method |
0.01-5 |
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