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$ 30.00 USD
Need to determine how clear the water is? Measure the turbidity or degree of visibility of the water you’re testing with the limnological secchi disc. Results are meaningless if they’re not repeatable and can’t be compared.
The sturdy plastic Secchi disc handily meets industry standards. It is 200 mm in diameter (7-7/8”) and has four quadrants, two white and two black. It is included 20 meters of 1/8” diameter line on a styrofoam form that will float if dropped in the water. Plus instructions that are written at a basic level.
Most scientists use a Secchi disc to determine the index of suspended matter in the water. The smaller the index - say, five feet - the more suspended material there is. The water is, obviously, less transparent, with a lower degree of visibility.
You can also use a Secchi disc to measure the depth of light penetration and can derive a rough estimate of the extent of the littoral zone.
Please note that this unit is designed for occasional student use only and is not meant to replace the professional Secchi discs.
Disco Secchi Limnológico Fieldmaster Student
$ 1,400.00 USD
The multi-detector optical configuration assures long-term stability and minimizes stray light and color interference. The new ratiometric design allows for easy and accurate testing. The nephelometric mode measures 0-40 NTU/FNU, ratiometric mode 40-1000 NTRU/FNRU and 1000-2000 AU. Now pinpoint the range of interest with better, more reliable results. Ideally suited for low-level drinking water applications, mid-range industrial applications, and high-range environmental applications.
version meets US EPA design criteria as specified by EPA 180.1, Rev. 2.0 (1993) and Standard Methods 2130 B-2001.
version meets design criteria for quantitative methods of turbidity using optical turbidimeters as specified by ISO 7027. Best for colored or extremely turbid samples.
Kits are supplied with 0, 1, and 10 NTU standards (Code 1974-T) or 0, 10, 100 FNU (Code 1974-I)
🟢 This product has no import restrictions.
|Unit of Measure 2020t:||NTRU, NTU, ASBC, EBC||NTU, ASBC, EBC||AU, NTU, ASBC, EBC|
|Unit of Measure 2020I:||FNRU, NTU, ASBC, EBC||FNU, NTU, ASBC, EBC||FAU, NTU, ASBC, EBC|
0-35,000 ASBC, 0-500 EBC
|Resolution:||0-10.99 NTRU/FNRU: 0.01
11.0-109.9 NTRU/FNRU: 0.1
110-1000 NTRU/FNRU: 1
|0-10.99 NTU/FNU: 0.01
11.0-100.0 NTU/FNU: 0.1
|0-2000 AU/FAU: 1|
|Accuracy:||0-2.5 NTRU/FNRU: ±0.05
2.5-100 NTRU/FNRU: ±2%
100-1000 NTRU/FNRU: ±3%
|0-2.5 NTU/FNU: ±0.05
2.5-100 NTU/FNU: ±2%
±10 AU/FAU or 6%, whichever is greater
|Detection Limit:||0.05 NTRU/FNRU||0.05 NTU/FNU||10 AU/FAU|
|Light Source:||2020t: Tungsten lamp 2300° K ±50° K;||2020i: IR LED 860 nm ±10 nm, spectral bandwidth with 50 nm|
|Detector:||2020t: Photodiode, centered at 90° and 180°, maximum peak 400-600 nm;||2020i: Photodiode, centered at 90° and 180°|
|Signal Averaging:||Disabled, 2, 5, 10|
|Power:||USB computer cable, wall adapter or Lithium ion rechargeable battery, 3.7V, 2.5" x .75", 1.7 oz|
|Data Logging:||500 points|
|Auto Shut-Off:||Disabled, 5, 10, 30 seconds|
|Languages:||English, French, Spanish, Japanese, Italian, Portuguese, Chinese|
|Response Time:||2 seconds|
|Size:||7.5 x 3.5 x 2.5 inches|
|Display:||6-line LCD with backlit display|