Hi Topload 
These precision top loading balances are highly accurate, feature six keys for exceptional versatility, and can display weight in one of five units of measure.
Some unique features are it's ability to display flow rate in grams per second and to withstand an overload of 10,000%.
A user defined unit can be programmed for any unit of measure, such as ml for measuring volume and $ for measuring value.
Each precision balance has a mode key that may be used to select either a fast or slow display update rate.
This key will also lock in a displayed weight, a feature useful in continuous weighing applications.
The print key may be set to transmit data instantaneously, continuously, or at selected time intervals.
SI Topload
These balances include single and dual range models, and use an economical two-key design for simplified operation.
These balances also feature a "collapsible" weighing pan for outstanding durability.
A special mode key on the precision balance can be used to perform a variety of functions such as conducting a simple span calibration or activating a unique hold feature that can lock in a displayed weight.
This key can also initiate data transfer to a printer or computer.
Data transmission can be instantaneous, continuous, or intermittent, as in once every 300 seconds.