Elite Scientific and Meditech Co.



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Portable turbidity meter, PNTU-1000


#Portable turbidity meter, PNTU-1000


The BOQU PNTU-1000 portable turbidity meter  consists of a host and a turbidity sensor. The turbidity sensor is based on a combined infrared absorption scatter ray method, and the ISO 7027 method can be used to continuously and accurately determine the liquid turbidity. The turbidity value was determined according to ISO 7027 infrared double scattering light technology without chromatic influence.

Main features of Portable Turbidity Meter

1)Portable host IP66 protection level,IP68 for turbidity sensor.

2)Advanced design with rubber washers for hand-held operation, easy to grasp in wet conditions.

3)Factory calibration, no calibration required in one year, can be calibrated on site.

4)Digital sensor, easy to use and fast in the field, and plug and play with portable host.

5)With USB interface, it can charge the built-in battery and export data through USB interface.

Technical parameters

Product PNTU-1000 Portabale Turbidity Meter
Turbidity range 0.1-1000NTU
Resolution 0.1 NTU
Accuracy ±5% or 0.3NTU
Calibration Standard calibration, water sample calibration
Sensor material SUS316L
Housing material ABS+PC
Operating temperature 1 to 45 ° C
Protection Portable host of turbidity instruemnt :IP66;

Turbidity sensor sensor IP68

Cable 3 meter(it can be extended)


Main features

Portable turbidity host IP66 protection,turbidity sensor is IP68

Ergonomic curve design with rubber washers for hand-held operation, easy to grasp in wet conditions

Factory calibration, no calibration required in one year, can be calibrated on site

Data recording function and with 8G for storage data

Digital turbidity sensor, easy to use and fast in the field, and plug and play with portable turbidity host

With USB interface, it can charge the built-in battery and export data through USB interface


Portable turbidity meter, TN100


#Portable turbidity meter, TN100


TN100 Portable turbidity meter is scattering turbidity meter used for measuring suspended in water or in transparent liquids insoluble particles generated by the light, and can content quantitative table card the suspended particulate matter.
Adopted international standards ISO7027 provisions Formazine turbidity standard solution calibration, using NTU as the turbidity measurement unit. it can be widely used in water plants, sewage treatment plants, beverage plants, environmental protection departments, industrial water, wine making industry and the pharmaceutical industry, epidemic prevention departments, hospitals and other departments of the determination of turbidity.

Technical indexes

Product TN100 Portable Turbidity Meter
Measuring range 0-1000NTU(Automatic switching range)
Resolution 0.01/0.1/1NTU
Accuracy ≤ ±5%
Repeatability ≤ ±1%FS
Calibration solution 0.02NTU, 20.0NTU, 100NTU, 800NTU (polyme)
Size/Weight Portable turbidity meter:(90×203×80)mm/385g

Suitcase: (310×295×110)mm/1.5Kg

Detector Silicon photocell
Sample bottle 25*60mm
Sample capacity 18ml
Protectoin IP67

Portable COD analyzer, COD-1S


#Portable COD analyzer, COD-1S


The portable cod(Chemical oxygen demand) analyzer is the use of sealed catalytic digestion, and then colorimetric measurements. The portable cod analyzer uses advanced, narrowband interference technology and microcomputer automatic processing of data, direct display. The instrument is widely used in environmental monitoring, waste water treatment and universities, research institutes and other departments.

Technical indexes

Product COD-1S Portable COD analyzer
COD range 5 ~ 2000mg / L, exceeding the dilution determined.
Repeatability ≤3%
Accuracy ≤ ± 5%
Resistance to chloride interference ≤ 2000mg / L
Temperature control system Room temperature ~ 180 ℃ can be set, COD digestion  temperature of 165 ℃
Temperature control accuracy ± 1 ℃
Temperature control time 1 ~ 999min adjustable
Digestion time 10min
Optical stability Instrument absorbance values drift less than 0.002A within 20min
Batch capacity Four water samples (or optional 16 water samples)
Dimension COD analyzer 80mm × 230mm × 55mm

CODigestion instrument: 105mm × 160mm × 90mm

Host power consumption current <40μA; digestion power consumption: <65W


Portable PPB Dissolved Oxygen Meter,DOS-118A


#Portable PPB Dissolved Oxygen Meter DOS-118A


DOS-118A ppb level portable dissolved oxygen meter is electrochemical analyzer of polarographic measuring principle. Measurement of oxygen in the gas, can also measure the dissolved oxygen  in aqueous solution.

The oxygen concentration in the gas (unit%) used for the measurement of grain, fruit, herbs warehouses, tunnel, air defense and naval vessels, also used to measure the pulmonary function of the medicine, power station, metallurgy, chemical and other boiler combustion process oxygen concentration in the gas phase.

Dissolved oxygen (unit mg/L) is dissolved in water or liquid molecular oxygen, its content is an important indicator of water quality merits. The measurement of dissolved oxygen is the indispensable monitoring project of power generation, boiler, aquaculture, water protection, water supply, sewage treatment and other departments.

Technical indexes

Measuring range Resolution: 0.0001mg/L
Accuracy: 0.001 mg/L (automatic switch)
Indication error ± 0.001mg/L
Repeatability ≤0.001mg/L
Response time Not more than 30s (90%, 25 ℃)
Zero values (error) (.0000-.1999) mg/L ≤0.001 mg/L
Working conditions a) Ambient temperature: 5-35℃
b) Relative humidity: ≤85%RH.
c) Power supply: DC3V
d) Measured medium temperature: 5-40℃
e) It should be no electromagnetic interference influence the normal operation of the instrument
f) Atmospheric pressure: 86-106 kPa
g)Power supply environment and good air circulation, without affecting the accuracy of detection of interference gas.
h) Power consumption: two No. 5 batteries run continuously for 365 days. (UPS)
I) Maintenance cost: free maintenance
Power supply voltage changes effect amount Instrument indication error 1/5.
Ambient temperature change effect amount Instrument indication error 2/3.
Oxygen electrode life More than one year.
Power dissipation <2mW
Size 25 x 68 x 133mm
Weight 230g

Portable residual chlorine meter analyzer, PTRC-222


#Portable residual chlorine meter analyzer, PTRC-222


The portable residual chlorine meter is widely used in environmental monitoring, sewage treatment and on-site detection in Colleges and universities, scientific research institutions and other departments.

Technical Features

  1. High-performance ultra-low power 16-bit single-chip computer, the standby time of the instrument can be longer than 6 months.
    2. The main engine case is made of moulded ABS material and designed with IP65. It has good anti-corrosion, waterproof and dust-proof performance.
    3. It can store 10 standard curves and 199 measured values (including concentration value, absorbance and transmittance with time label for years, months, days, hours, minutes and seconds).
    4. Full English display, can be charged with lithium power supply.
    5. Cold light source and narrow-band interference optical system have good optical stability.
    6. Data power-off protection function; easy to operate and intuitive.

Technical indexes

Product Portable Chlorine Analyzer
Chlorine range 0~2 mg/L,2~10 mg/L
Accuracy ≤ ± 3% F.S
Repeatability ≤ ± 3%
Dimension 210mm×280mm×190mm
Optical stability The absorbance drift of the instrument is less than 0.002A within 20 minutes
Normal conditions of use Ambient temperature:   5~40℃
Relative humidity:  ≤85%
Power supply:  AC(220±22)V;(50±0.5)Hz(rechargeable battery)
No significant vibration and electromagnetic interference, avoiding direct sunlight.

Optical portable dissolved oxygen meter, DOS-118G


#Optical portable dissolved oxygen meter, DOS-118G

#Optical portable dissolved oxygen meter, DOS-118G

#Optical Portable DO Meter DOS-118G


The BOQU Instrument launched a new optical portable dissolved oxygen meter. Unlike traditional electrochemical sensors, optical dissolved oxygen sensor use fluorescence quenching techniques. This technique is based on a proven method for accurately measuring dissolved oxygen concentrations. The concentration of oxygen in the water can be measured by the quenching effect of the fluorescent substance on the surface of the sensor, without the need for internal filling, and without the need for preheating. The sensor has a fast response, does not consume dissolved oxygen, from the flow rate and the impact of test solution dirt and so on.

Technical parameters

Product DOS-118G Portable Optical Dissolved Oxygen Meter
Measuring range 0-20 ppm DO,(0-200% saturation)
Resolution ±0.1 mg/L  ( 0-20 mg/L )
Response time <60 second
Principles and methods ①The sensor surface contains fluorescent or dye substances

②LED emits blue light onto the sensor surface

③Blu-ray causes the fluorescent substance to excite and emits red light

④The time to emit red light is measured by the optical sensor

⑤The red LED lamp is used as a reference light source

⑥The higher the dissolved oxygen concentration, the red light emission time will be shortened, the optical sensor thus calculated by the oxygen concentration

⑦proprietary algorithms are more accurate than common linear algorithms

Main features

Optical principle and Maintenance-free: no need to add electrolyte solution

High stability, no need to regularly calibrate or replace the sensor cap.

High repeatability, no drift measured.

Simple operation, no agitation, no flow-dependent and accurate from dirt.

Automatic temperature and pressure compensation, plug and use.

Salinity compensation function: to test the sea water and a variety of salt solution dissolved oxygen.

Portable ammonia analyzer, BQNH-81


#Portable ammonia analyzer, BQNH-81


  1. High performance ultra low power 16 bit microcontroller, the instrument standby time of up to 6 months or more.
    2. With imported high performance, long life, high brightness light source, with high stability optical system, good repeatability, high precision.
    3.Portable ammonia analyzer is convenient, compact and convenient to carry on the spot inspection.
    4.It can save the standard curve 20 and 199 values (including time label years, months, days, hours, minutes, seconds of ammonia nitrogen value, light absorption and light transmittance)
    5. Cold light source, narrow band interference optical system, optical stability is good.
    6. Data power protection function.
    7. The main engine casing is molded ABS material, IP65 design, anti-corrosion, waterproof and dust proof performance is good.

8.Using the battery to do power, portable design, suitable for field use stability, high precision data can be saved and query.

Technical indexes

Product BQNH-81 Portable Ammonia Analyzer
Measuring range 0.02-50mg/L
Repeatability ≤3%
Accuracy ±3%(F.S)
Dimension 80mm×230mm×55mm
Working ambient Ambient temperature:5~40℃

Relative humidity: ≤85%

Power supply: 4 section 5 battery

No significant vibration and electromagnetic interference, avoid direct sunlight

Portable pH/ORP Meter, PHS-1701


#Portable pH/ORP Meter PHS-1701


PHS-1701 portable pH and ORP meter is a digital display PH meter, with LCD digital display, which can display PH and temperature values simultaneously. The instrument applies to the labs in junior college institutions, research institutes, environmental monitoring, industrial and mining enterprises and other departments or field sampling to determine the aqueous solutions’ PH values and potential (mV) values. Equipped with ORP electrode, it can measure the solution’s ORP (oxidation-reduction potential) value; equipped with the ion specific electrode, it can measure the electrode potential value of the electrode.

Technical indexes

Product Portable pH and ORP Meter
Measuring range pH -2.00…16.00
mV -1999…1999
Temp -5℃—105℃
Resolution pH 0.01pH
mV 1mV
Temp 0.1℃
Electronic unit measurement error pH ±0.01pH
mV ±1mV
Temp ±0.3℃
pH calibration 1point, 2 point, or 3 point
Isoelectric point pH 7.00
Buffer solution 8 groups
Power supply DC6V/20mA ; 4 x AA/LR6 1.5 V or NiMH 1.2 V and chargable
Size/Weight 230×100×35(mm)/0.4kg
Display LCD
pH input BNC,resistor >10e+12Ω
Temp input RCA(Cinch),NTC30kΩ
Data storage Calibration data;198 groups measurement data(99 groups for pH,mV each)
Working condition Temp 5…40℃
Relative humidity 5%…80%(without condensate)
Installation grade
Pollution grade 2
Altitude <=2000m
Portable TSS meter, PSS-200

Portable TSS meter, PSS-200


#Portable TSS meter, PSS-200


The instrument features stable and accurate, easy to use, is widely used in analysis the harmful elements of surface water, sewage and industrial waste water.
The instrument has the following advantages:
1. Excellent optical stability, adopts cold light, monochromatic light as light source.
2. Easy to operate while guarantees high accuracy and LCD display makes operation simple.
3. V / F conversion, software redundancy, software traps and other key technologies promise strong anti-interference.
4. Store up to 500 historical records, users can quickly query records. Unexpected power off cannot trigger the records lose.
5. Special ABS housing ensures anti-corrosion.
6. Convenient and quick, can direct measure water samples without reagents.

Technical indexes

Product PSS-200 Portable Suspended Solid Meter
Measuring range 0 ~ 1000 mg/L (001.Curvel 1 for 0-100mg/L, 002.Curvel 2 for 100-1000mg/L)
Resolution 0.01mg/L
Accuracy ≤ ± 2% F.S
Repeatability ≤ ± 2%
Size/Weight 230×100×35(mm)/0.4kg
Optical stability Instrument absorbance value within 20 min drift is less than 0.002 A
Dimension BNC,resistor >10e+12Ω
Temp input RCA(Cinch),NTC30kΩ
Normal conditions of use Ambient temperature:  5 ~ 40 ℃
Relative humidity:  ≤85%
Power supply:  AC(220±22)V;(50±0.5)Hz(rechargeable battery)
No significant vibration and electromagnetic interference, avoiding direct sunlight.


Portable dissolved oxygen meter, DOS-1703


#Portable dissolved oxygen meter, DOS-1703


DOS-1703 portable dissolved oxygen meter is outstanding for ultra-low power microcontroller measurement and control, low power consumption, high reliability, intelligent measurement, using polarographic measurements, without changing the oxygen membrane. Having reliable, easy (one-hand operation) operation, etc.; the instrument can display dissolved oxygen concentration in two kinds of measurement results indicates, mg/L (ppm) and the oxygen saturation percentage (% ), in addition, measure the temperature of the measured medium simultaneously.

Technical indexes

Product Portable Dissolved Oxygen Meter
Measuring range DO 0.00–20.0mg/L
Temp 0…60℃ (ATC/MTC)
Atmosphere 300–1100hPa
Resolution DO 0.01mg/L,0.1mg/L(ATC)
Temp 0.1℃
Atmosphere 1hPa
Electronic unit measurement error DO ±0.5 % FS
Temp ±0.2 ℃
Atmosphere ±5hPa
Calibration At most 2 point, (water vapor saturated air/zero oxygen solution)
Power supply DC6V/20mA; 4 x AA/LR6 1.5 V or  NiMH 1.2 V and chargable
Size 230×100×35(mm)
Display LCD
Sensor input connector BNC
Data storage Calibration data;99 groups measurement data
Working condition Temp 5…40℃
Relative humidity 5%…80% (without condensate)
Installation grade
Pollution grade 2
Altitude <=2000m