Interconnected bioreactors

1. A method of homogenously mixing the contents of a plurality of bioreactors comprising:

(a) providing a plurality of bioreactors, 1 through nth, in a series, installed on a same plane either in a series or in a circular pattern, the bioreactors comprising a bioreactor container with at least two surfaces and two opposing sides, to hold a liquid further comprising a nutrient media and a biological culture, a means of gassing the liquid further comprising a gas inlet, a gas sterilizing filter and a gas sparging filter, a gas exhaust, at least one nutrient media inlet/outlet, at least one liquid ports installed on the bottom with means of closing or opening the liquid port, a means of agitating the nutrient media, a plurality of sensors installed in the bioreactor container with at least a sensor for measuring the weight of the bioreactor container;

(b) providing a receiving container capable of holding an appropriate quantity of the liquid wherein the receiving container further comprises a support capable of being raised or lowered;

(c) connecting the liquid port of each bioreactor to the receiving container;

(d) operating the bioreactors;

(e) opening all liquid ports;

(f) lowering the receiving container support to a position below the position of bioreactors;

(g) measuring the increase in the weight of the receiving bioreactor to a pre-determined level;

(h) raising the receiving container support to a position higher than the bioreactors;

(i) measuring the decrease in the weight of the receiving container;

(j) repeating the steps (f) to (i) periodically or continuously.

2. The method of homogenously mixing according to claim 1 , wherein the bioreactors are arranged on a variable plane.

3. The method of homogenously mixing according to claim 1 , wherein the receiving container is rocked, shaken or stirred continuously or intermittently.