NSF-1 Stone Powder Content TesterDetailed product description：

1、 Purpose:
The NSF-1 stone powder content tester is designed and manufactured according to the requirements of the national standard GB/T14684-2001 "Building Sand" for determining the stone powder content. It can be used by building materials testing laboratories of construction and transportation departments to determine the stone powder content. It consists of an electric mixing device, an automatic controller for speed and time, and a measuring cup holder.
According to GB/14684-2001, users can choose:
1. Methylene blue MB value determination method;
2. Rapid test method for methylene blue.
The instrument adopts microcomputer technology to automatically implement the specified operation steps according to the selected method, and displays the time and speed digitally.

2、 Technical indicators
1. Mixing speed self-control: 600 ± 60r/min, 400 ± 40r/min
2. Timing device: maximum 90 minutes resolution of 1 second
3. Speed measurement error: ± 2r/min
4. Mixing impeller: Φ 75 ± 10mm
5. Glass bottle capacity: 1 liter
6. Self control function: can choose methylene blue MB measurement method or methylene blue rapid test method