The product FlowLac® is produced by spray-drying a suspension of fine milled alpha-lactose monohydrate crystals in a solution of lactose. When lactose in solution is spray-dried, a rapid removal of water is taking place, whereby amorphous, non-crystalline lactose is formed in addition to crystalline lactose. Based on the amorphous content, kept on a stable level, non-varying better tabletting properties can be reached.
Due to the spray-drying process, FlowLac® has a spherical agglomerate shape, consisting of small alpha-lactose monohydrate crystals bound by amorphous lactose.
FlowLac® 100 is the standard grade for spray-dried lactose, which provides an excellent flowability and an extraordinary compactability compared to all other lactose grades.
Particle size distribution
[Air jet sieve]
<32 µm: NMT 10%
<100 µm: 20-45%
<200 µm: NLT 80%
Typical Values
Bulk Density [g/l]: 590
Tapped Density [g/l] : 710
Hausner factor: 1.2
Carrs index: 16.9 %
