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Laboratory Equipment

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Price

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Accuracy

±1 % F.S 1

Accuracy

±1 % F.S 1 ±1.5 % F.S 1 ±2 % F.S 1

Accuracy

2 % F.S 2 ±0 2 ±0.1% FS 2 ± 0.2 % F.S 6

Accuracy

±0.1 EC ±30ppm (500ppm) ±40ppm (700ppm) 1

Accuracy

5 °C ±1 digit 1 ±0 1 ±0.1% F.S ±1 digit 3 ±0.2 % F.S. ± 1 digit 11 ±0.2% F.S 1

Accuracy

whichever is greater 2 ±0.02 ppm or ±5% of reading 2

Accuracy

Device: ±1.0 F.S 3 Total: ±1.5% F.S 3 ±1.0% F.S 1

Accuracy

Device: ±0.1 FS 1 Device: ±0.1% FS 2 Total: ±15 mV 3

Accuracy

incl. Electrode error 4 the larger value counts in each case 1 ±0.30 mg/L (ppm) 4 ±2% of the display or ±2% of the saturation; ±2 % of the display or ±0.2 mg/l (ppm) 1

Accuracy

5 °C 16 5 °C ±1 digit 9 ±0 25 ±0.5 °C 2 ±0.5 °C ±1 digit 7 ±1 °C 3 ±1°C/±1°F 1

Accuracy

≤ ±2% of reading ± stray light 2 ≤ ±2% of the measured value + stray light 1 ≤ ±2% of the measured value ± stray light 1

Accuracy

Conductivity ±1.0% F.S 1 ±0.1EC ±30ppm (500ppm) ±40ppm (700ppm) 1 ±1 % F.S 4 ±1.0 % F.S ±1 digit 2 ±1.0% F.S ±1 digit 1

Air Pressure Compensation

(66 to 200) kPa (manual) 4

Automatic Calibration

Air saturated with water; water saturated with air 4

Backlight

Backlight White (measurement); Green (Calibration); Red (error) 1

Cable

1m 5 Ø3mm×1m 22 Ø5mm × 1m 1 Ø5mm×1m 10

Cable Length

2 m 1 3m 2 30cm 1

Calibration

Automatic 1 to 2 point calibration 1

Calibration

Automatic 1 point calibration 2 Automatic 1-point calibration 1

Calibration

1 point (2.77 EC) 1

Calibration

1 to 3 points 17 Automatic 1 to 3 point calibration 11 Automatic 1-3 point calibration 1 Automatic 1-point calibration 1 automatic 17

Calibration

1 point (2.77EC) 1 1 to 3 points 3 Automatic 1 point calibration 1 Automatic 1 to 2 point calibration 1 automatic 2 automatic or manual 1

Calibration Memory

Calibration date and time 1 Calibration points 1 date and time 1

Calibration standard

20 4 100 4 400 3 400 and 800 NTU (FNU) AMCO Polymer or Formazin 1 800 NTU (FNU) AMCO Polymer or Formazin 2 800 NTU AMCO Polymer or Formazin 1

Cell Constant

0.1/1/10 cm-1 2 1/1/10 cm-1 1 K=1 6

Cell Constant

0.1 / 1 / 10 cm-1 1

Cell Constant

K = 1 2 K = 10 1

Certification

CE & ISO9001:2015 1 RoHs 1

Compensation

Automatically 1

Connection

8 pin 3 8-pin 2 BNC 20 BNC / RCA 1 BNC/RCA 8 RCA 1

Connector

8-Pin 1 BNC 1 BNC/RCA 2

Data Content

Measured value 1 Numbering 1 date 1 temperature 1 time 1 unit 1

Data Content

Serial number 2 measured value 2 measuring unit and temperature 2

Data Storage

100 data sets 1 200 data sets 1 300 data sets 2 300 sets 1 400 data sets 3

Data Storage

200 measurement groups 2

Diaphragm

Ceramics 3 Double ceramic 1 Double diaphragm 2 Open 2 PTFE 1

Diaphragm

Double-junction 1 Double ceramic 3 Single ceramic 1

Diaphragm

2-porous 1 Ceramic+single pore 5 Ceramics 13 Ceramic x 3 4 Hole 2 Movable sleeve 4 PTFE 3 Single fiber ceramic 1 Sliding sleeve 1

Diaphragm type

HF 1 L 3 S 4

Dimensions

39×25×176 mm 2 148×29×14 mm (with case 165×95×28 mm) 4

Dimensions

40 × 40 × 178 mm (with case 255 × 210 × 50 mm) 9 40×31×178 mm (with case 190 × 165 × 40 mm) 3 40×31×178 mm 190×165×40 mm (with case) 1 40×40×178 mm (with box 275×135×45 mm) 4 40×40×178 mm (with case 255 × 210 × 50 mm) 2 75×35×35 mm 14 140×50×60 mm 3

Dimensions (W×L×H) /Weight

Meter: (90×203×80) mm/ 385 g Transport case: (310×295×110) mm/ 1.5 kg 2

Dimensions / Weight

3 kg 2 4 kg 1 88x170x33 mm / 313g with case: 360x270x76 mm / 1 3 88×170×33 mm / 313 g with case: 360×270×76 mm / 1.3 kg 13 88×170×33 mm / 313 g with case: 360×270×76 mm / 1.3 kg 1 88×170×33 mm / 313 g with case: 360×270×76 mm / 1.4 kg 1

Dimensions and Weight

5 kg 1 Meter: (65x120x31) mm /180 g Case: (360x270x76) mm /1 1 Meter: (65×120×31) mm/ 180 g Carrying case: (255×210×50) mm/ 790 g 1 Meter: (65×120×31) mm/180 g Complete set: (255×210×50) mm/1380 g 2 Meter: (65×120×31) mm/180 g Complete set: (255×210×50) mm/1490 g 1 Meter: (65×120×31) mm/180 g Complete set: (255×210×50) mm/1760 g 2

Dimensions and Weight

Meter: (90×203×80) mm/ 385 g Complete set: (310×295×110) mm/ 1.5 kg 2

Display

TFT color display 3 TFT color screen 1

Electrode Connection

8-pin (conductivity) 3 8-pin (for conductivity) 2 BNC (for pH/ ORP) 1 BNC (for pH and ORP) 13 BNC (pH/ ORP) 3 RCA (for temperature) 15 RCA (temperature) 3

Electrode Constant

0.1 / 1 / 10 cm-1 3

Electrode Type

Polarographic 1

Electrode Type

Polarographic 4

Electrolyte

3M KCL 3 Gel KCl 7

Electrolyte

Gel KCL 4

Electrolyte

1M LiCl 1 3M KCl 11 Gel 2 Gel KCl 5 Polymer 8 Protelyt 2 Protelyte 3

Energy Supply

3.7V rechargeable lithium battery 2 4 × 1.5V AA batteries 1

Glass Diaphragm Type

PHY 1

Glass Membrane Type

Flat 1 S 13

Housing

Polycarbonate 17

Housing Protection Class

IP57 3 IP57 (waterproof and floatable) 2

Housing Protection Class

IP57 15 IP67 2 IP67 (waterproof and floatable) 15

IP Protection Class

IP57 2

IP Rating

IP57 4 IP67 (waterproof and floatable) 3

IP Rating

IP57 7

IP Rating

IP67 2

Input Current

≤2×10-12 A 5

Input Impedance

≥1×1012Ω 5

Insulation Resistance

≥1×1011 Ω 1

Interface

USB 3

Interface

USB 2

Internal resistance

≤10 MΩ 1

Light Detector

Silicon photocell 4

Light Source

Infrared LED (860±30nm) 2 Tungsten incandescent lamp (400nm – 600nm) 2

Material

Stainless steel 1

Measuring Method

ISO 7027 and DIN EN 27027 compliant nephelometric method (measurement of scattered infrared light at 90°) 2 U.S. EPA 180.1 compliant nephelometric method (measurement of scattered radiation from white light at 90°) 2

Measuring Modes

Normal measurement and TruRead™ measurement 2 Normal measurement and average measurement 1 Normal measurement and average measurement mode 1

Measuring Range

00 ppt 3 0 to 10 3 0 to 10.0 ppt 1 0 to 20.0% 1 0 to 100.0 ppt 1

Measuring Range

-1000 to 1000 mV 1 -1000 ~ 1000 mV 3 -1999 to 1999 mV 2 ± 1000 mV 6 ±1000 mV 2

Measuring Range

50 Ω-cm to 20 MΩ-cm 1

Measuring Range

0 to 10.0 EC 1 0 to 5000ppm (500ppm) 1 0 to 7000ppm (700ppm) 1

Measuring Range

±1000 mV 13 ±1999 mV 1 ±2000 mV 3

Measuring Range

0.02 to 1900 ppm 2

Measuring Range

(2.00 to 19.99) mS/cm (20.0 to 199.9) mS/cm TDS: (0 to 100) g/L; Salinity: (0 to 100) ppt Resistivity: (0 to 100) MΩ·cm 3 (20.0 to 199.9) μS/cm (200 to 1999) μS/cm 3 Conductivity: (0.00 to 19.99) μS/cm 3 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 spec. Resistance: (0 ~ 100) MΩ-cm 1

Measuring Range

(0 to 19.99) mg/L (ppm); (0 to 200.0) %. 3 0 to 200 %; 0-20.0 mg/l 1

Measuring Range

0 to 50 °C 24 0 to 50°C (32 to 122°F) 5 0 to 60 °C 1 0 to 100 °C 18

Measuring Range

00 ppt 2 0 to 10 1 0 to 100.0 ppm 0 to 1000 ppm 0 to 10 1 0.1 ppm to 10.00 ppt 2

Measuring Range (mV/ORP/EH)

-1999mV to 0 to 1999mV 3

Measuring cells

borosilicate glass with screw cap 4 ø25×60 mm 3 ∅25×60 mm 1

Membrane Type

Conical 1 Flat 1 HA 3 HF 1 PHY 1 S 2

Memory Content

Measuring units and temperature value 2 Numbering 2 measured value 2

Memory Locations

500 records 1 500 sets 1

Memory Space

500 sets 1

Memory Values

Measured value 2 Numbering 2 date 2 temperature 2 time 2 unit 2

Memory Values

Serial number 4 measured value 4 measuring unit and temperature 4

Microvolume

≥50μl 1

Operating Conditions

0 – 70% at 50°C 4 0 – 80% at 40°C 4 Temperature: 0 – 50 °C (32 °F – 122 °F); rel. Humidity: 0 – 90% at 30°C 2 Temperature: 0 – 50°C；rel. Humidity: 0 – 90% at 30°C 2 no condensation 4

Operating Temperature

(-5 ~ 100) °C 3 (0 ~ 80) °C 1 (0 ~ 100) °C 1 (0 ~ 130) °C 3

Operating Time

Up to 1000 hours 14

Power Supply

2 AA batteries (1.5V x2) 6 2 x battery type CR2032 4 2 × AAA batteries 2 2x AA battery (1.5 V) 2

Power Supply

3 x AA Batteries 16 3 x AA batteries / DC 5V (USB port) 3 4 × AAA batteries 18 4× AA alkaline batteries 1

Quality and Safety Guidelines

CE / RoHS 1

Quality and safety certification

CE 8 ISO 9001:2015 6 ISO9001:2015 2 RoHS 1

Reference

Ag/AgCl 7

Reference

Ag/AgCl 3

Reference Electrode

Ag/AgCl 2

Reference Electrode

Ag/AgCl 1

Reference Temperature

20°C 3 25°C 3 and 18°C 3

Reference electrolyte

3M KCl 1

Reference system

Ag/AgCl 1 Long Life 19 Pre-pressurized silver ion trap 1 Silver ion trap 11 Silver ion trap with preprint 2

Reproducibility

whichever is greater 3 ≤ ±1 % of reading or 0.02 NTU (FNU) (whichever is greater). 1 ≤ ±1% of reading or 0.02 NTU 2 ≤ ±1% of the measured value or 0.02 NTU (FTU) 1

Resolution

0.1/1 ppm; 0.01 ppt 1

Resolution

0.01/0.1 ppt 1 0.1 ppt 1 1% 1

Resolution

1 mV 9

Resolution

0.1EC 1 10ppm (500ppm) 1 10ppm (700ppm) 1

Resolution

0.1/1 mV 3 1 mV 13 ±1 mV 1

Resolution

0.01/0.1/1 μS/cm; 0.01/0.1 mS/cm 4

Resolution

1 mV 3

Resolution

0.1 / 1 %; 0.01 / 0.1 mg/l (ppm) 1 0.1/0.01 mg/L (ppm); 1/0.1 % 4

Resolution

0.1 °C 7 0.1°F/0.1°C 1 1 °C 32

Resolution

0.01 / 0.1 / 1 NTU 1 0.01 / 0.1 / 1 NTU (FNU) 3

Resolution

0.01 pH 1 0.1/ 0.01 pH 2 0.1/0.01 pH 8 01 19 1 4 1 mV 1 1/0 13

Resolution

0.01/0.1/1 μS/cm; 0.01/0.1 mS/cm 3 0.1/1/10 μS/cm 3 0.1EC 1 01 mS/cm 1 1/1 μS/cm 1 10ppm (500ppm) 1 10ppm (700ppm) 1

Response Time

≤ 30s (90% response at 25°C) 1

Response Time

90 % in ≤30 s (at 25 ℃ ) 1 ≤ 30s (90% response at 25°C) 4

Salinity compensation range

(0 to 45) ppt 1

Salinity compensation range

(0 to 45) ppt (automatic) 4

Security Certificate

CE and RoHS 2 ISO9001:2015 and CE 1

Sensor Type

LabSen pointed glass membrane 2 LabSen® S-type spear glass membrane 1 Lithium Flat Glass 2 Lithium glass 3 Lithium glass membrane 2

Sensor Type

Platinum black sensor 4 Titanium alloy 2

Sensor Type

Platinum 4

Shank material

Lead free glass 23 PC (Polycarbonate) 1 POM 4 POM (polyoxymethylene) 2 PVC plastic 2 Special Glass Lead Free 2 Titanium alloy 1 Titanium blade 1 lead-free glass 1

Size

88×170×33 mm (with case 360×270×76 mm) 1

Solution pH Value

(5 ~ 6) pH 1

Solution temperature

(5 ~ 40) °C 1

Stability

±0.01 pH/3h 5

Storage Conditions

Gauge: -40 to 60°C (-40 to 140°F) Calibration solutions: 5 to 30°C (41 to 86°F) 2 Instrument: -40 to 60 °C (-40 to 140 °F) Calibration solutions: 5 to 30 °C (41 to 86 °F) 2

Storage solution

3M KCl 26 Protelyt 2 Protelyte 3

Stray Light

≤ 0.02 NTU 1 ≤ 0.02 NTU (FNU) 2 ≤0.02 NTU (FNU) 1

System Supply

4 × AAA batteries 1

TDS Factor

0.40 to 1.00 3

Temp. Compensation

(0 to 100) °C (automatic) 5

Temp. Compensation

(0 to 50) °C (automatic) 3

Temp. compensation

(0 to 45) °C (automatic) 4

Temp. compensation range

(0 to 45) °C 1

Temp. sensor

30kΩ NTC 2 NTC 30kΩ 3

Temperature Accuracy

5 °C 1 ±0 1

Temperature Compensation

0 to 50 °C (automatically) 1

Temperature Compensation

0 to 50 °C (automatically) 1 0 to 60 °C (automatic) 2

Temperature Compensation

0 to 50 °C (automatically) 1 0 ~ 50°C (32 ~ 122°F) 2

Temperature Compensation

(0 – 80) °C (automatic) 2

Temperature Compensation

(0 to 50) °C (Automatic) 1

Temperature Compensation

(0 to 100) °C (Automatic) 2 0 to 50 °C (automatically) 12 0 to 60 °C (automatic) 1 0 to 100 ° C (automatic or manual) 17

Temperature Compensation

0 to 50 °C (automatically) 4 0 to 50 °C (automatic or manual) 3

Temperature Measuring Range

0 to 50 °C 1

Temperature Range

0-50°C（32˚F-122˚F） 1

Temperature Resolution

1 °C 1

Temperature Sensor

30KΩ thermistor 16 NTC 30kΩ 3

Temperature Sensor

30 KΩ thermistor 2 30KΩ NTC 1 30KΩ thermistor 3 NTC 30kΩ 4

Test Volume

18 ml 4

Unit

EC/500ppm/700ppm 1 °C 1 °F 1

Unit

mg/l 2 pF 2 ppm 2

Weight

49 g (with case 160 g) 4 87 g 2

Working Temperature

0 ~ 50°C (32 ~ 122°F) 2 0~50°C (32 ~ 122°F) 2

Zero potential pF value

(0 ~ 1) pF 1

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WS200 Fluoride/pH/Conductivity Meter with 3-in-1 Fluoride Electrode

Manufacturer: Apera Instruments Item Number: AI4721

WS200 Fluoride/pH/Conductivity Meter with 3-in-1 Fluoride Electrode

The WS200 Fluoride/pH/Conductivity Meter from Apera Instruments is specifically designed for accurate and reliable measurements of fluoride, pH, condu..

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