What nano is and what a ≤ 50 μm fraction means
We mill ordinary kratom powder to a fraction of around 80 mesh - particles up to roughly 180 μm. Nano goes one step further: after the first milling comes a second, finer one that brings the particles below 50 μm. "Nano" here is therefore a label for the grind, not a size in nanometres and not a strain. What mesh and micrometres actually mean and how the fraction is measured is covered in the guide kratom powder granulometry.
What the finer grind changes - and what it does not
Smaller particles have a larger total surface, so nano powder wets faster, mixes in more evenly and stays suspended longer than a coarser grind. It is also lighter by volume: at the same weighed amount it fills a different volume on the spoon, so a guess by eye is even less reliable with nano, and the only dependable measure remains a scale. What the grind does not change is alkaloid content - the mill adds and removes nothing; the values are set by the leaf and you read them in the batch protocol. A finer grind therefore does not mean a stronger product; claims about effects are not permitted by law, and the only text about action is the mandatory information on the packaging.
The plant and the leaf composition
The leaf comes from Mitragyna speciosa, an evergreen tree of the coffee family (Rubiaceae) and a botanical relative of coffee. It holds more than forty alkaloids: mitragynine dominates, with smaller amounts of 7-hydroxymitragynine, speciogynine and paynantheine - and how much of them a batch holds differs from batch to batch, independently of the grind. That is why the product has its own certificate of analysis (COA) from VŠCHT Prague, which measures mitragynine and 7-hydroxymitragynine by HPLC, along with purity, microbiology and heavy metals. An overview of batches is on the Laboratory tests page.
So far the only nano product
Nano is a form, not a strain, so in principle it can appear with different leaves; in our range it is so far carried by a single product - Green Rurut Nano, green-processed leaf of the Rurut strain from Borneo. What the name Rurut means and what marks out green processing are described on their own pages. Whether another colour or strain joins nano depends on the availability of a batch with a laboratory protocol; the current state is shown by the catalogue above.
Storing a fine powder
A finer fraction has a larger surface, so it takes on moisture and odours faster than a regular grind; in light and air the leaf also oxidises and darkens. Store nano therefore in the carefully closed original pouch, in a dry, dark place at room temperature, out of reach of persons under 18, and do not leave the pouch open needlessly. The shelf life of the batch is on the pack; how long the powder keeps and how to tell it is no longer good is covered in storing kratom powder.
The law and buying
Nano kratom, like ordinary powder, is a psychomodulatory substance under Act No. 167/1998 Coll.: it may be sold only by a holder of a Ministry of Health licence and exclusively to persons over 18 after age verification. We pack it in 25 g and 50 g resealable pouches with the mandatory labelling, a batch number and instructions for use. You can buy at our two shops in Prague or in the e-shop with delivery across the Czech Republic (delivery and payment). What we may and may not say about effects is summarised in Kratom effects: what we may say.
Other forms, the strain and the colour
Available forms: Powder, Extract.
Other strains: Maeng Da, Sumatra, Thai, Hulu, Elephant, Borneo, Rurut.
Warning: This product is not a food. Not intended for persons under 18. Use according to the instructions. Do not exceed the recommended daily dose.
