--- product_id: 110992391 title: "Apera Instruments, LLC-AI3101 LabSen 211 Glass-Body pH Electrode for General Water Solutions, Impact-Resistant Sensor, TRIS Buffer Compatible, BNC Connector" price: "€ 234.19" currency: EUR in_stock: true reviews_count: 4 url: https://www.desertcart.gr/products/110992391-apera-instruments-llc-ai3101-labsen-211-glass-body-ph-electrode store_origin: GR region: Greece --- # 10x stronger impact-resistant glass Swiss proprietary sensor tech Stabilized readings in 15-30 sec Apera Instruments, LLC-AI3101 LabSen 211 Glass-Body pH Electrode for General Water Solutions, Impact-Resistant Sensor, TRIS Buffer Compatible, BNC Connector **Price:** € 234.19 **Availability:** ✅ In Stock ## Summary > 🧬 Elevate your lab game with precision and resilience – because your measurements deserve the best. ## Quick Answers - **What is this?** Apera Instruments, LLC-AI3101 LabSen 211 Glass-Body pH Electrode for General Water Solutions, Impact-Resistant Sensor, TRIS Buffer Compatible, BNC Connector - **How much does it cost?** € 234.19 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/110992391-apera-instruments-llc-ai3101-labsen-211-glass-body-ph-electrode) ## 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 - • **Bubble-Free Performance:** Swiss blue gel electrolyte eliminates air bubbles inside the membrane, ensuring consistent, reliable measurements every time. - • **Universal Compatibility:** Standard BNC connector fits seamlessly with all BNC-enabled pH meters, making upgrades effortless. - • **Long-Life Reference System:** Innovative design extends electrode lifespan by stabilizing the reference system against temperature fluctuations. - • **Precision Meets Durability:** LabSen’s hemispherical glass membrane delivers ultra-fast, stable pH readings with 10x the strength of traditional electrodes. - • **Swiss-Engineered Excellence:** Crafted with premium Swiss materials and proprietary sensor tech for unmatched accuracy in general water solutions. ## Overview The Apera LabSen 211 pH Electrode combines Swiss proprietary sensor technology with a robust, impact-resistant hemispherical glass membrane to deliver fast, stable, and highly accurate pH measurements for general water solutions. Featuring a long-life reference system and bubble-free gel electrolyte, it ensures durability and consistent performance. Compatible with all BNC connector pH meters, it’s the professional’s choice for reliable lab and field testing. ## Description Built with proprietary sensor technology and materials from Switzerland, Apera LabSen 211 pH Electrode is ideal for professional lab and field pH measurement of general water solutions. LabSen S-type hemispherical glass membrane - low resistance and high firmness, rendering fully stabilized readings in 15 to 30 seconds, and is yet 10 times stronger than traditional glass membranes, highly resistant to general impact, eliminating the chance of accidental breakage. Long-Life Reference System - composed of a glass tube, AgCl, and a reference silver wire. The top end of the slim glass tube is stuffed with cotton, which prevents the reaction between AgCl and electrolyte when the temperature changes. It improves the stability of reference electrode and extends the service life of the electrode. The electrode uses a standard BNC connector, compatible with any pH meters that use BNC connectors. No temperature sensor is built-in. Users need to have a separate temperature probe (ex: Apera MP500) to enable ATC or manually input temperature to achieve temperature compensation. Review: Very accurate, very strong - great piece. - Calibration tests were perfect, this is lightweight, strong, and solid. The glass tip is nice. Works well, would like to see a slightly stronger stress reliever on the BNC connector, other than that, I would be pressed to find anything wrong with this Review: Fragile - Probe isnt impact resistant. Glass tip breaks easily. Have to calibrate 1 - 2 times a month due to slippage. I used the probe only 3 months before glass tip broke off in nutrient bucket. ## Features - Proprietary pH sensor technology and premium materials from Switzerland - Unique LabSen blue hemispherical glass membrane, faster response rate, better repeatability, and impact-resistant - Long-life reference system, improving the stability of reference electrode and prolong the service life of the electrode - Compatible with Tris buffer solutions - No more air bubbles inside the glass membrane thanks to the Swiss blue gel electrolyte. ## Technical Specifications | Specification | Value | |---------------|-------| | Customer Reviews | 4.8 out of 5 stars 12 Reviews | ## Images ![Apera Instruments, LLC-AI3101 LabSen 211 Glass-Body pH Electrode for General Water Solutions, Impact-Resistant Sensor, TRIS Buffer Compatible, BNC Connector - Image 1](https://m.media-amazon.com/images/I/51Jwus07GML.jpg) ![Apera Instruments, LLC-AI3101 LabSen 211 Glass-Body pH Electrode for General Water Solutions, Impact-Resistant Sensor, TRIS Buffer Compatible, BNC Connector - Image 2](https://m.media-amazon.com/images/I/61WYEM0AgaL.jpg) ![Apera Instruments, LLC-AI3101 LabSen 211 Glass-Body pH Electrode for General Water Solutions, Impact-Resistant Sensor, TRIS Buffer Compatible, BNC Connector - Image 3](https://m.media-amazon.com/images/I/71tC7-3KS8L.jpg) ![Apera Instruments, LLC-AI3101 LabSen 211 Glass-Body pH Electrode for General Water Solutions, Impact-Resistant Sensor, TRIS Buffer Compatible, BNC Connector - Image 4](https://m.media-amazon.com/images/I/71fkxqNPrVL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Very accurate, very strong - great piece. *by D***Y on December 26, 2017* Calibration tests were perfect, this is lightweight, strong, and solid. The glass tip is nice. Works well, would like to see a slightly stronger stress reliever on the BNC connector, other than that, I would be pressed to find anything wrong with this ### ⭐⭐⭐ Fragile *by R***C on June 28, 2020* Probe isnt impact resistant. Glass tip breaks easily. Have to calibrate 1 - 2 times a month due to slippage. I used the probe only 3 months before glass tip broke off in nutrient bucket. ### ⭐⭐⭐⭐⭐ Precisione stabilità risposta molto rapida *by L***I on May 10, 2024* Faccio questa recensione dopo oltre due anni dall'acquisto e del suo uso, messa in acquario su Phmetro Dupla in servizio continuo 24h al giorno, la calibrazione la faccio ogni 2/3 mese ma più che una calibrazione è una verifica in quanto molte volte non ho bisogno di ricalibrare, la risposta è molto rapida e sono molto soddisfatto di questa sonda sicuramente a fine vita ne acquisterò un'altra uguale anche se nel fra tempo ha subito un notevole aumento di prezzo, comunque ancora fa egregiamente il proprio lavoro solo ora e solo per scrupolo sostituirò la soluzione di riferimento che non ho mai sostituito. I miei parametri di utilizzo sono in acqua addizionata con CO2 per avere un Ph costante di 6.7 con un isteresi di -0.05 --- ## 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.gr/products/110992391-apera-instruments-llc-ai3101-labsen-211-glass-body-ph-electrode](https://www.desertcart.gr/products/110992391-apera-instruments-llc-ai3101-labsen-211-glass-body-ph-electrode) --- *Product available on Desertcart Greece* *Store origin: GR* *Last updated: 2026-07-11*