Measurement Method

 Ratio turbidimetric determination using a primary nephelometric light scatter signal (90°) to the transmitted light scatter signal.

 Regulatory

 2100Q: Meets EPA Method 180.1
 2100Q IS: Meets ISO 7027

 Light Source

 2100Q: Tungsten filament lamp
 2100Q IS: Light-emitting diode (LED) @ 860 nm

 Range

 0 to 1000 NTU (FNU)

 Accuracy

 ±2% of reading plus stray light from 0 to 1000 NTU

 Repeatability

 ±1% of reading, or 0.01 NTU (FNU), whichever is greater

 Resolution

 0.01 NTU on lowest range

 Stray Light

 <0.02 NTU (FNU)

 Signal Averaging

 Selectable on/off

 Detector

 Silicon photovoltaic

 Reading Modes
 (user selectable)

 Normal (Push to Read)
 Signal Averaging
 Rapidly Settling Turbidity

 Power Requirement

 110-230 Vac, 50/60 Hz (with Power or USB+Power Module)
 4 AA alkaline batteries
 Rechargeable NiMH (for use with USB+Power Module)

 Operating Conditions

 Temperature: 0 to 50°C (32 to 122°F)
 Relative Humidity: 0 to 90% @ 30°C,
 0 to 80% @ 40°C, 0 to 70% @ 50°C, noncondensing

 Storage Conditions

 -40 to 60°C (-40 to 140°F), instrument only

 Languages

 English, French, German, Italian, Spanish, Portuguese (BR), Portuguese (PT), Bulgaria n, Chinese, Czech, Danish, Dutch, Finnish, Greek, Hungarian, Japanese, Korean, Polish, Romanian, Russian, Slovenian, Swedish, Turkish

 Interface

 Optional USB

 Instrument Enclosure Rating

 IP67 (closed lid, battery compartment excluded)

 Protection Class

 Power Supply: Class II

 Certification

 CE certified

 Sample Required

 15 mL (0.3 oz.)

 Sample Cells

 60 x 25 mm (2.36 x 1 in.) borosilicate glass with screw cap

 Dimensions

 22.9 x 10.7 x 7.7 cm (9.0 x4.2 x 3.0 in.)

 Weight

 527 g (1.16 lb) without batteries
 618 g (1.36 lb) with four AA alkaline batteries