---
title: "Wireless drop counter"
url: "https://cma-science.com/product/wireless-drop-counter/"
type: "product"
published: "2026-06-22T08:38:36+01:00"
modified: "2026-08-19T16:49:50+01:00"
author: "Tom van Raaij"
---

The sensor can be used wirelessly via Bluetooth or wired via USB with the Coach 7 or Coach 7 lite programs/apps on computers (Windows and Mac), Chromebooks and mobile devices (Android and iOS). The sensor features a color OLED display that shows sensor information and measured values, allowing it to be used as a standalone measuring instrument.
 As droplets pass through the sensing area, the sensor detects and records each drop automatically using an infrared detection system.

**Technical specifications:**

- Measuring range: 0 .. 10 drops per second (or 0 .. 100 ml volume)
- Resolution: 1 drop
- Warrantee: 36 months
- Detection Hole Size: Ø 11.5 mm
- Electrode Hole Size: Ø 13mm
- Temperature sensor Hole size: Ø 4mm
- OLED display: 0.96” 128 x 64px
- Battery life: 7h when fully charged (rechargeable)
- Connection: Bluetooth 5, Low Energy (Mac, Android, iOS) Bluetooth 2.1, Classic (Windows) or USB-C 2.0
- Included accessories:
    - 100 ml plastic syringe with Luer-lock; by removing the piston the syringe becomes a titrant solution reservoir
    - Two 3-way valves with Luer-lock connectors
    - A 1.6 mm drop tip
    - USB-A to USB-C cable

All specifications of the sensor are described it its Product manual, see downloads.

**Suggested chemisty experiments:**

The Wireless Drop Counter W13 can be used together with wireless pH, conductivity, temperature or ORP sensors in various experiments such as:

- pH titrations
- Conductivity titrations
- ORP titrations
- Temperature monitoring during titrations