Lepidico Ltd. announced that it has produced battery grade lithium carbonate product grading 99.88%, using its L-Max® technology. This result was from part of the ongoing Pre-Feasibility Study (PFS) test work programme. Samples from two separate lepidolite deposits have now been tested for the Phase1 commercial L-Max® plant PFS and a sample from one further deposit is in the processs of being tested with results pending. Hydrometallurgical batch test shave been completed on the second PFS sample, sourced from a known pegmatite for which there is an existing Mineral Resource estimate. The mineralization sample contained approximately 30% lithium mica and graded 2.2% Li2O. From this a flotation concentrate was produced grading 4.6% Li2O. Lithium recovery to concentrate was 96%. The sample was then subjected to leaching under standard L-Max® conditions, with extractions for lithium, caesium and rubidium of approximately 98% for each element. The leach liquor from the test was subjected to the usual L-Max® downstream process flowsheet in a series of batch tests. Lithium losses in the post leach L-Max® process were estimated at5%, with total recovery from concentrate being 93%. Battery grade lithium carbonate grading 99.88% was produced from these tests. Caesium, rubidium and tantalum in residue represent an excellent opportunity to extract further valuable by-products, as has been under taken on previous samples tested. A 38% sodium silicate solution was produced with a SiO2/Na2O ratio of 1.60. This is consistent with the grade of high density, saleable sodium silicate solution and thereby represents a further valuable potential by-product of L-Max®.