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  Indian J Med Microbiol
 

Figure 2: (a) First prototype: standard cylindrical-based 500 ml water bottles. (b) Second prototype: two hundred and fifty milliliter cylindrical-based water bottles. (c) Third prototype: standard square-based 500 ml water bottles. Stable but bulky. (d) Final design: two hundred and fifty milliliter square-based water bottles strapped together with rubber bands, with the probe fitted snugly in between. Stable and compact

Figure 2: (a) First prototype: standard cylindrical-based 500 ml water bottles. (b) Second prototype: two hundred and fifty milliliter cylindrical-based water bottles. (c) Third prototype: standard square-based 500 ml water bottles. Stable but bulky. (d) Final design: two hundred and fifty milliliter square-based water bottles strapped together with rubber bands, with the probe fitted snugly in between. Stable and compact