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AquaSearcher™ AB33EC Bench Meter   
Highly reliable conductivity/TDS/salinity/resistivity benchtop meter for wide conductivity range.
The AquaSearcher™ AB33EC bench meter is designed with reliable measurement and user interface in mind. The i-Steward ensures repeatable and consistent measurement accuracy for optimal peace of mind. The 6.5 In. LCD display and touch keypad make changing the parameters, executing setup, and performing calibration as simple as using a smartphone.
- Applications
 - Conductivity, Total Dissolved Solids (TDS), Salinity, and Resistivity with Temperature Measurements
 - Display
 - 6.5 In. Segment & Dot matrix LCD with backlight
 - Operation
 - Capacitive touch, ABS top housing, standalone electrode holder
 - Communication
 - RS232, USB Device (included)
 - Construction
 - AC adapter (included)
 - Design Features
 - i-Steward, Calibration due alarm, 1,000 measurement memory
 
Specifications
 
| Item # | 30589828 | 30589829 | 
| Accuracy | ± 0.5 % Reading ± 2 LSD | |
| Display | LCD with backlight & one-line dot matrix | |
| Electrode | Not included | STCON7 (Included) | 
| Conductivity Accuracy (±) | 0.50% | |
| Conductivity Measuring Range | 0.001 to 1000 mS/cm | |
| Dims (D x W x H) | 8.3 x 5.6 x 2 In. | 210 x 142 x 51 mm | |
| Net Weight | 1.1 lb | 0.5 kg | |
| Parameter | Cond. | |
| Power | AC Adapter (Included) | |
| Resistivity Measuring Range | 1 Ohm to 100 MOhm | |
| Resistivity Resolution | 0.01 Ohm | |
| Temp. Resolution | 0.3°C | |
| Temp. Sensor | No | N/A | 
| Work Environment | 41ºF to 104ºF (5ºC to 40ºC), 80% RH, Non-condensing | |
AquaSearcher™ AB33M1 Bench Meter   
Easy-to-use and accurate multi-parameter benchtop meter.
The AquaSearcher™ AB33M1 multi-parameter bench meter is designed with reliable measurement and user interface in mind. The i-Steward ensures repeatable and consistent measurement accuracy for optimal peace of mind. The 6.5 In. LCD display and touch keypad make changing the parameters, executing setup, and performing calibration as simple as using a smartphone.
- Applications
 - pH, Oxidation-Reduction Potential (ORP), Conductivity, Total Dissolved Solids (TDS), Salinity, and Resistivity with Temperature Measurements
 - Display
 - 6.5 In. Segment & Dot matrix LCD with backlight
 - Operation
 - Capacitive touch, ABS top housing, standalone electrode holder
 - Communication
 - RS232, USB Device (included)
 - Construction
 - AC adapter (included)
 - Design Features
 - i-Steward, Two Independent Channels, Calibration due alarm, 1,000 measurement memory
 
Specifications
 
| Item # | 30589824 | 30589825 | 
| Measurement Range | -5°C to 110°C; -2000.00 to +2000.00 mV; -2.00 to 20.00 pH | |
| Measurement Resolution | 0.1°C; 0.1 mV; 0.01 pH | |
| Accuracy | ±0.3°C; ±0.5 mV; ±0.01 pH | |
| Display | LCD with backlight & one-line dot matrix | |
| Electrode | Not included | ST310 (Included); STCON3 (Included) | 
| Accuracy ± (mV) | 0.5 mV | |
| Accuracy ± (Temp.) | 0.3°C | |
| Conductivity Accuracy (±) | 0.50% | |
| Conductivity Measuring Range | 0.01 – 500 mS / cm | |
| Dims (D x W x H) | 8.3 x 5.6 x 2 In. | 210 x 142 x 51 mm | |
| Net Weight | 1.1 lb | 0.5 kg | |
| Parameter | pH / Cond. | |
| pH Accuracy (±) | 0.01 | |
| Power | AC Adapter (Included) | |
| Resistivity Measuring Range | 2 Ohm to 100 MOhm | |
| Resistivity Resolution | 0.01 Ohm | |
| Temp. Sensor | No | N/A | 
| Work Environment | 41ºF to 104ºF (5ºC to 40ºC), 80% RH, Non-condensing | |
OHAUS Starter Portable Multi-Parameter pH Meters   
Durable, Waterproof Battery-Operated Multi-Parameter Meters Ideal for Field Testing.
Starter 400M Multi Parameter Portable Water Analysis Meters are robust, lightweight, battery-operated units with waterproof housing, which are ideal for testing pH, conductivity, TDS, salinity and resistivity in wet environments. A rechargeable lithium battery ensures hours of trouble-free testing in the field. Intuitive software and an easy-to-view LCD allow for simple operation. A built-in USB port enables easy data transfer.
- Applications
 - pH, Conductivity, TDS, Salinity and Resistivity Testing
 - Display
 - Backlit Liquid Crystal Display (LCD)
 - Operation
 - Rechargeable lithium battery
 - Communication
 - Built-in micro-USB port
 - Construction
 - IP67 waterproof plastic housing, IP67 probes, rubber cover
 - Design Features
 - Data storage of up to 1000 items
 
Specifications
 
| 30468990 | 30468991 | 30468992 | 
| 400M Meter with IP67 Rubber Housing, Electrode Clip, Wrist Strap and 4 AAA Batteries (Probes Not Included)  | ST400M-B with ST320 IP67 3m and STCON3 IP67 3m probes  | ST400M-F with Portable Bag  | 
| Measurement Range | 0-20 MΩ•cm | -5 °C to 110 °C | -2.00 to 16.00 pH | 00.0 μS/cm to 199.9 mS/cm  0.1 mg/L to 199.9 g/L (TDS) | -1999 to 1999 mV | 0-99.9 psu  | 
| Measurement Resolution | 0.01 mg/L | 0.01 psu | 0.1 °C | 0.1 μs/cm | 0.01 pH | 0.01 Ω•cm | 1 mV | 
| Accuracy | ± 0.5 % F.S.; ±0.3 °C; ±1 mV; ±0.01 pH | 
| Display | LCD Backlit Display | 
| Electrode | ST320 IP67 3m | STCON3 IP67 3m | *Not included with Item # 30468991 | 
| mV Accuracy | ± 1 mV | 
| Temp. Accuracy | ± 0.3 °C | 
| Battery Life | 40 Hours with Rechargeable Battery | 
| Conductivity Accuracy | ± 0.5% | 
| Conductivity Range | 0.01 μS/cm to 199.9 mS/cm | 
| Dimensions (D x W x H) | 9.05 x 1.57 x 3.94 In. | 230 x 40 x 100 mm | 
| Temp. Range | -5 °C to 110 °C | 
| Measurement Range | -1,999 mV to 1,999 mV | 
| Net Weight | 0.77 lb | 0.35 kg | 
| pH Accuracy | ± 0.01 | 
| pH Measuring Range | -2 to 16 | 
| pH Resolution | 0.01 | 
| Resistivity Measuring Range | 0 MOhm to 20 MOhm | 
| Resistivity Resolution | 0.01 MOhm | 
| Resolution Cond. | 0.1 to 199.9 (Variable) | 
| Resolution | 1 mV (Voltage) | 
| Temp. compensation | Automatic | 
| Temp. resolution | 0.1 °C | 
| Temp. Sensor | 30 KΩ NTC | 
| Work Environment | 41°F to 104°F (5°C to 40°C), 80% RH, Non-condensing | 
3540 Bench pH/conductivity Meter (US)
- Simultaneous display of pH and conductivity
 - 2 independent channels to prevent interference between probes
 - Additional modes for resistivity, salinity, TDS and mV
 - Data logger with auto save/print options
 - Storage of up to 500 readings (250 for each mode)
The 3540 is ideal for use in all laboratories where pH and conductivity analyses are required. The setup menu gives quick and easy access to the whole range of instrument, pH and conductivity measurement options. Calibration of both channels is automatic, with the option to select 1, 2 or 3 calibration points. The pH channel can also display mV values if required.The 3540 conductivity pH meter is supplied with a glass combination pH electrode (924 005), glass conductivity probe (K=1 027 013), electrode stand and holder, ATC probe (027 500), BNC shorting plug, pH buffers and US power supply.
Parameter3540
pH range
-2.000 to +20.000
pH resolution
0.001/0.01/0.1
pH accuracy
±0.003
Conductivity range
Auto-selected from 0.01µS to 1.999S
Conductivity resolution
0.01µS to 1mS
Conductivity accuarcy
±0.5% ±2 digits
mV range
±1999.9mV
mV resolution
0.1mV
mV accuracy
±0.2mV
Temperature range
-10 to 105°C
Temperature resolution
0.1°C
Temperature accuracy
±°0.5°C
ATC range
0 to 100°C
Reference temperature
18,20 or 25°C
GLP
Calibration reminder interval,
Security code protected dataOutputs
Analogue, RS232and IrDA
Connector
BNC (pH) and 7-pin DIN (conductivity)
Power
9V AC ±10% @ 50/60Hz
Size (l x w x d)
210 x 250 x 55mm
Weight
850g