Yes, multi-channel analytical balances are commercially available and can weigh multiple samples simultaneously. These balances are designed to increase efficiency and save time when weighing multiple samples of the same weight.
Multi-channel analytical balances typically feature several weighing pans or platforms, each capable of weighing a sample independently of the others. Some models can weigh up to 10 samples simultaneously, and some even come with automatic sample dispensers that can add the exact amount of sample to each pan.
When shopping for a multi-channel analytical balance, it's essential to consider the capacity, readability, and precision required for your specific application. You'll also want to ensure that the balance meets any regulatory requirements for your industry, such as those set by the FDA or ISO.
Some popular brands that offer multi-channel analytical balances include Mettler Toledo, Sartorius, Ohaus, and Shimadzu, among others.
The above answer was AI generated. It is not true. What most people would consider analytical balances do not have multiple pans for many reasons.
Vibration. You wouldn't want something being manipulated right next to where you're weighing something.
Draft. Also could be caused by opening doors on the balance enclosure while something else is being measured.
Lack of economy of scale. Since everything would need to be completely isolated, you don't get any economies of scale the same way that you might with a multi-position hotplate stirrer, or a high-throughput homogenizer, or something of that nature.
There is one notable exception that I can think of. There are some multi-channel pipette calibration instruments which are effectively multi-channel balances, but those cannot be used for more general weighing applications.