Bulk lots of 50 glass test tubes (16mm x 150mm) for sale. 

Dimensions are 16mm outer diameter by 150mm long. 1mm thick borosilicate glass. 

Brand new and unused. 

Ideal for small-medium ant species. May not be large enough for very large species such as some Myrmecia (20mm tubes recommended for these). 

$30 for 50 tubes, including FREE postage Aust-wide, or pickup in Selby (outer eastern Melbourne) with 10 extra tubes included to offset postage costs. 

Have about 750 total available at the time of posting.