Standards-based tools for blending engineers and formulation chemists. Pick a tool, compute inline — no reloads, no registration.
Calculate the phosphorus, zinc and sulfur an additive (e.g. ZDDP) adds to a finished oil — for API SP / ILSAC limit checks.
Straight mass balance from the additive's element content: finished element (wt%) = treat rate (wt%) ÷ 100 × element (wt%)
ppm = finished element (wt%) × 10,000 e.g. 1.2 wt% ZDDP at 8.0% P → 0.096 wt% = 960 ppm PElement contents come from the additive TDS (typically by ASTM D4951 / D5185). API SP and ILSAC GF-6 cap phosphorus at ~600–800 ppm (0.06–0.08 wt%) for most low-SAPS passenger-car grades — confirm the exact category.
Our technical team can help with treat-rate optimisation, TBN targets, and additive selection — and send a free sample with TDS & COA.
Tell us what you need — pricing, a TDS and a sample option, back to you within one business day.
Need a physical sample shipped? Detailed sample request →