Three manganese products, and only one of them carries a single published manganese figure you can put straight into a calculation.
The short answer. On our published figures: manganese sulphate monohydrate is 31-32% Mn, EDTA Mn is 12-13% Chelated Mn, and manganese oxide is published as various grades rather than a single number. So the sulphate is roughly two and a half times the chelate on manganese content, and the oxide has to be fixed at the enquiry stage.
Our manganese oxide page says ‘various grades’, and that is deliberate rather than an omission. Where a product is genuinely supplied in more than one grade, publishing one figure would be misleading to every buyer who receives a different one. Tell us the grade you need, or the specification you are working to, and we will confirm what we can supply before you raise an order.
This is the same principle as everywhere else on this site: where we have a figure we publish it, and where the answer depends on the order we say so instead of inventing one.
| Product | Formula | Grade published | Standard packing |
|---|---|---|---|
| Manganese Sulphate Monohydrate | MnSO₄·H₂O | 31-32% Mn | 50 kg net, HDPE bag |
| Manganese Oxide | MnO₂ | Various grades | 50 kg net, HDPE bag |
| EDTA Mn (Manganese) | C₁₀H₁₂MnN₂Na₂O₈ | 12-13% Chelated Mn | 50 kg net, HDPE bag |
Every grade in this table is the figure published on that product’s own page on this site. Nothing is estimated. The guaranteed analysis on the product page and the batch certificate of analysis govern any supply.
Manganese sulphate monohydrate at 31-32% Mn against EDTA Mn at 12-13% is the same shape of comparison as zinc, iron and copper, and the reasoning is set out in EDTA chelated micronutrients vs sulphate salts. Cost the two on manganese content using the nutrient cost comparison calculator, then decide on the application rather than on the arithmetic alone.
Where two products carry the same element at different strengths, the price per kilogram of bag is not a comparison. Divide the delivered price per kilogram by the element fraction and you get the cost per kilogram of the thing you are actually buying. That is the only basis on which grades of different strength can be set against each other.
Our nutrient cost comparison calculator does that arithmetic on any two products in our range and prints its working, and the element content calculator converts between kilograms of product and kilograms of the element. Freight follows the same logic: moving a weaker grade means paying to move more material that is not the element.
That is decided by your process, and by things we cannot see from here: how the product is applied, what it is blended with, what has to dissolve and how fast, the specification you or your customer must meet, and how far the material travels. Any supplier who answers that question without asking about your process is guessing.
We manufacture the alternatives set out above, so we have no reason to steer you toward the dearer one. Describe the application and we will tell you what we would send and why, including when the cheaper grade is the right answer.
Four things let us price these products without a round of questions: the grade, the quantity, the delivery location, and any specification you have to meet. Send those and we come back with a price, the packing, and the documents that travel with the consignment. There is more detail on what to send us for a quote.
Buying more than one product? Send the full list and we will quote it as one consignment.
Send the grade, the quantity and the delivery location and we will quote against them.