--- product_id: 32453628 title: "LLC-AI481 TN400 Portable Turbidity Meter, Infrared Sensor, ISO 7027 Compliant, EPA Approved Standard Solutions for Easy Calibration, Accuracy: ±2%+Stray Light" price: "€ 1131.94" currency: EUR in_stock: true reviews_count: 10 url: https://www.desertcart.hr/products/32453628-llc-ai481-tn400-portable-turbidity-meter-infrared-sensor-iso-7027 store_origin: HR region: Croatia --- # ISO 7027 Compliant Accuracy ±2% 1-Year Shelf Life LLC-AI481 TN400 Portable Turbidity Meter, Infrared Sensor, ISO 7027 Compliant, EPA Approved Standard Solutions for Easy Calibration, Accuracy: ±2%+Stray Light **Price:** € 1131.94 **Availability:** ✅ In Stock ## Summary > 🌊 Dive into Clarity with Precision! ## Quick Answers - **What is this?** LLC-AI481 TN400 Portable Turbidity Meter, Infrared Sensor, ISO 7027 Compliant, EPA Approved Standard Solutions for Easy Calibration, Accuracy: ±2%+Stray Light - **How much does it cost?** € 1131.94 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/32453628-llc-ai481-tn400-portable-turbidity-meter-infrared-sensor-iso-7027) ## Best For - Customers looking for quality international products ## Why This Product - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Quality Assurance:** CE and ISO 9001:2015 certified for peace of mind. - • **Certified Confidence:** Trust in U.S EPA certified solutions for reliable results. - • **User-Friendly Interface:** Navigate effortlessly with a large TFT screen for intuitive operation. - • **Precision at Your Fingertips:** Experience accuracy with a ±2% measurement tolerance. - • **Continuous Monitoring Made Easy:** Hold the Measure button for seamless continuous measurement. ## Overview The Apera Instruments AI481 TN400 Portable Turbidity Meter is designed for professionals seeking reliable and accurate water quality measurements. Featuring an infrared sensor and compliance with ISO 7027 standards, this meter ensures precise readings with a ±2% accuracy. Its user-friendly TFT screen and continuous measurement mode make it ideal for both fieldwork and laboratory settings. With EPA-approved standard solutions that boast a 1-year shelf life, this turbidity meter is the perfect tool for ensuring water quality compliance. ## Description Apera Instruments TN400 Portable Turbidity Meter is built with an infrared light source, using ISO7207 compliant cephalometric method (90°) with a user-friendly operating system, designed for reliable and easy turbidity measurements from 0 to 1000 NTU in various applications both in-field and in-lab such as water treatment and beverage making. The test kit comes with 4 vials of high-molecular polymer turbidity standard solutions (0. 02 NTU, 20. 0 NTU, 100 NTU, 800 NTU), which are EPA approved primary standard for calibration of turbidity sensors that are safe, non-toxic and disposable; NIST traceable to particle size/distribution and optical density, and its inherent stability means it does not settle from suspension. The standards have a one-year shelf life. The convenient submicron polymer suspensions are non-toxic primary calibration standards approved by the U. S EPA for drinking water analysis. The meter is CE certified and comes with a 2-year . Review: Great Instrument for Turbidity - We had been looking for a more economical and reliable turbidity meter to replace our aging HACH units and this fits the bill perfectly. We have 4 or 5 of these now and they are easy to use and the case it comes in is also great compared to the huge "tacklebox" style other brands come in. The replacement standards are also easy to order and use and it comes with plenty of sample vials for tests in the field. Very happy so far. Review: Well built and highly reproducible - It's a nice, complete kit, with carrying case, extra batteries, a tiny screwdriver (for the waterproof battery hatch), and a bunch of sample jars and standards. Everything seems well built, with stable calibration/results and good resolution and range. Recommended. ## Features - Infrared sensor — ISO7207 compliant cephalometric method (90°) - Intuitive operation system 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 by holding the Measure button for 3 seconds - CE and ISO 9001: 2015 certified ## Technical Specifications | Specification | Value | |---------------|-------| | Customer Reviews | 4.5 out of 5 stars 60 Reviews | ## Images ![LLC-AI481 TN400 Portable Turbidity Meter, Infrared Sensor, ISO 7027 Compliant, EPA Approved Standard Solutions for Easy Calibration, Accuracy: ±2%+Stray Light - Image 1](https://m.media-amazon.com/images/I/71XM77L41vL.jpg) ![LLC-AI481 TN400 Portable Turbidity Meter, Infrared Sensor, ISO 7027 Compliant, EPA Approved Standard Solutions for Easy Calibration, Accuracy: ±2%+Stray Light - Image 2](https://m.media-amazon.com/images/I/81a-3XiOcvL.jpg) ![LLC-AI481 TN400 Portable Turbidity Meter, Infrared Sensor, ISO 7027 Compliant, EPA Approved Standard Solutions for Easy Calibration, Accuracy: ±2%+Stray Light - Image 3](https://m.media-amazon.com/images/I/61kFCHujDGL.jpg) ![LLC-AI481 TN400 Portable Turbidity Meter, Infrared Sensor, ISO 7027 Compliant, EPA Approved Standard Solutions for Easy Calibration, Accuracy: ±2%+Stray Light - Image 4](https://m.media-amazon.com/images/I/613S+g1RwZL.jpg) ![LLC-AI481 TN400 Portable Turbidity Meter, Infrared Sensor, ISO 7027 Compliant, EPA Approved Standard Solutions for Easy Calibration, Accuracy: ±2%+Stray Light - Image 5](https://m.media-amazon.com/images/I/71FVsJvwW5L.jpg) ## Available Options This product comes in different **Pattern, Style** options. ## Questions & Answers **Q: Is this unit capable of exporting the testing data?** A: No. **Q: Does it come with a wall plug?** A: No **Q: does equipment have spanish language?** A: The instruction booklet we received was in English only. However, operation is very simple. **Q: Hi, we would like to find a #2 sample vials replacement ( φ25×60 mm) for the apera instruments tn400. what is the right product to order?** A: TN400-S2 (#1,#2,#3 sample vials, one of each). We have it available on our Apera official website - https://aperainst.com/tn400-s2-sample-vials-set. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great Instrument for Turbidity *by M***R on June 19, 2024* We had been looking for a more economical and reliable turbidity meter to replace our aging HACH units and this fits the bill perfectly. We have 4 or 5 of these now and they are easy to use and the case it comes in is also great compared to the huge "tacklebox" style other brands come in. The replacement standards are also easy to order and use and it comes with plenty of sample vials for tests in the field. Very happy so far. ### ⭐⭐⭐⭐⭐ Well built and highly reproducible *by N***N on August 9, 2024* It's a nice, complete kit, with carrying case, extra batteries, a tiny screwdriver (for the waterproof battery hatch), and a bunch of sample jars and standards. Everything seems well built, with stable calibration/results and good resolution and range. Recommended. ### ⭐⭐⭐⭐⭐ The Apera Turbidity Meter provides reproducible results in a simple to use format *by M***H on January 3, 2021* We have used this product to assess the extent of turbidity in newly made wines. The instrument provides consistent, reproducible MTU values obtained using a simple, convenient format. The results obtained have enabled accurate prediction of our wine's heat stability, essential data needed prior to bottling. ## Frequently Bought Together - Apera Instruments, LLC-AI481 TN400 Portable Turbidity Meter, Infrared Sensor, ISO 7027 Compliant, EPA Approved Standard Solutions for Easy Calibration, Accuracy: ±2%+Stray Light - APERA INSTRUMENTS AI316 Premium Series PC60 5-in-1 Waterproof pH/EC (Conductivity) /TDS (ppm) /Salinity (ppt) /Temp. Multi-Parameter Pocket Tester Kit - APERA INSTRUMENTS AI209 Value Series PH20 Waterproof pH Tester Kit, ±0.1 pH Accuracy --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/32453628-llc-ai481-tn400-portable-turbidity-meter-infrared-sensor-iso-7027](https://www.desertcart.hr/products/32453628-llc-ai481-tn400-portable-turbidity-meter-infrared-sensor-iso-7027) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-05-17*