Due to a limited supply on some items, all orders will be reviewed prior to processing. Some items may be available to existing customers only. We apologize for any inconvenience and appreciate the patience during this pandemic.

Click to enlarge

Met One Hand Held, 2 Programmable Ch., 0.3-5.0 m, 0.1 cfm


Big Performance, Small Size

The MO-GT521 is a full-featured, battery operated, portable laser particle counter that provides the funcitionality of a bench unit with the convenience of a handheld! It can datalog particle counts continuously or send them to a network.

Dual Programmable Particle Channels

Two programmable particle channels with a range of 0.3-5.0 microns each show differential or cumulative particle counts in real time, with selectable count units. 

Simple and Powerful Menu-Driven Command Set

A simple touch of a button sets particle sizes, sample time, alarm settings, and basic setup parameters such as date/time and communications settings. Remote operation via RS-232 or RS-485 communications ports allows extensiv control, including all front-panel operations

Flexible Data Interfaces

Stores up to 4,000 records for printer output, Excel formatted output, or networked datalogging via the included single computer software (GT-Comm).

Temperature and Relative Humidity Option

A plug-and-play option that immediately adds ambient temperature and relative humidity capabilities to the displayed and logged data.