Are all organs weighed on a triple beam balance ?

No,not all organs are weighed on a triple beam balance.

Explanation:

Usually smaller sized organs like adrenals, thyroid are commonly used to be weighed on triple beam balance, whereas larger organs like lungs, liver and heart can only be weighed on grocer's scale.Only weight of the smaller body organs can be measured very precisely with the help of triple beam balance, where as if we measure the weight of the larger organs using the same triple beam balance,then the resultant value thus obtained will not be accurate enough.Hence organs are weighed on a triple beam balance.