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Apera Instruments, LLC-AI481 TN400 Portable Turbidity Meter, Infrared Sensor, ISO 7027 Compliant, EPA Approved Standard Solutions for Easy Calibration, Accuracy: ±2%+Stray Light
✅ In stock
📉 Price recently dropped
C
Grade
Analysis Confidence
100%
⚠️ Price may have changed. Last updated 24+ hours ago — confirm on Amazon.
Check Deal at Amazon
Price verified Sep 15, 2026 6:33 PM · Prices & availability subject to change
Is This a Good Price on Amazon?
🙂 Fair Price- 🙂Verdict: Fair Price. Small discount vs history. Consider waiting for a better drop.
- 💰The price is modestly below what this product ordinarily sells for.
- 📉No lower price has surfaced in the past twelve months, making this one of the standout deals in recent memory.
- 📈The direction is downward at the moment; if that holds, an even better price may surface — though timing the market is never certain.
How We Scored This Deal
Price Competitiveness
7.38/28
Recent Value
11.27/22
Market Standing
13.73/20
Deal Strength
16/20
Momentum
10/10
📝 Product Overview
🏪 Sold by
Apera Instruments
🚚 Shipping
Free Shipping
Product Details
✓Infrared sensor — ISO7207 compliant cephalometric method (90°)
✓Intuitive operation on a large TFT screen— measure and calibrate at ease
✓U. S EPA certified, non-toxic polymer standard solutions with 1-year shelf life, easy-to-use
✓Continuous measurement mode available for observation of repeatability.
✓CE and ISO 9001: 2015 certified
⚙️ Specifications
Measuring Method
ISO 7027 compliant nephelometric method (90°)
Light source
Infrared LED (850nm wavelength)
Measuring Range
0 to 1000 NTU, automatic range selection: 0.01 to 19.99 NTU; 20.0 to 99.9 NTU; 100 to 1000 NTU.
Resolution
0.01/0.1/1 NTU
Accuracy
≤ ±2 % of reading± stray light
Product Dimensions
12.2 x 11.81 x 4.33 inches
Item Weight
13.6 ounces
Manufacturer
Apera Instruments
ASIN
B01F34Y7L0
Item model number
AI481
Batteries
4 AA batteries required. (included)
