Manufacturing
Process Control
Every release of a grade against the customer specification and against Sun Ace's own action limits, the moment QC closes the batch.
Newest release
B26-0351 SAK-OTM 70 · methyl tin mercaptide, bottle & sheet · 2,971 kg made 18 Jul 2026 PassClosed by Vinh Le at 10:40am · 16 days ago · WO-2026-0351
Releases plotted
15
11 Sep 2025 to 18 Jul 2026
Viscosity 25°C · published grade
Inside spec, outside our limits
0
Every release sat inside the action limits
Nothing to check
Outside the customer spec
0
No release broke the specification
Clean
The line
No comparison
Only 1 release in the last week of production
Widen the window
Every measure on the release
Pick one to open it below. Bands as drawn on the big chart.
SAK-OTM 70 · methyl tin mercaptide, bottle & sheet · Viscosity 25°C
Customer specification 180 to 340mPa·s from the QP-TIN plan. Action limits 208 to 304, the middle 60% of the customer window, measured out from target.
15 releases of SAK-OTM70 · 0 inside the customer specification but outside the action limits · 0 outside the specification · widest reading 272mPa·s, narrowest 225mPa·s.
Worth a look
Releases outside the action limits, newest first, with what is still on the rack.
Every release of SAK-OTM70 sat inside the action limits on Viscosity 25°C.
Is the line getting skinnier
How much of the customer window the releases occupy, measured back from the last run on 18 Jul 2026.
| Window | Releases | Lowest | Highest | Window used |
|---|---|---|---|---|
| Last week of production | 1 | 225 | 225 | Too few |
| Last month | 2 | 225 | 242 | Too few |
| Last two months | 2 | 225 | 242 | Too few |
Too few releases in the last week of production to read against the two-month baseline.
The readings
The charts above as numbers, newest first. ◆ past our action limits, ■ outside the customer specification.
| Batch | Made | Yield % | Peak temperature °C | Torque, peak Nm | Tin content % | Viscosity 25°C mPa·s | Colour, initial ΔE | Verdict |
|---|---|---|---|---|---|---|---|---|
| B26-0351 | 18 Jul 2026 | 99.35 | 135.6 | 41.7 | 18.71 | 225 | 1.82 | Pass |
| B26-0321 | 21 Jun 2026 | 99.51 | 134.4 | 42.0 | 18.46 | 242 | 1.20 | Concession |
| B26-0268 | 09 May 2026 | 99.47 | 134.9 | 41.9 | 18.50 | 251 | 1.50 | Pass |
| B26-0214 | 24 Apr 2026 | 99.08 | 134.4 | 41.6 | 18.39 | 227 | 1.23 | Pass |
| B26-0212 | 08 Apr 2026 | 99.11 | 136.1 | 41.9 | 18.54 | 256 | 2.06 | Pass |
| B26-0207 | 08 Apr 2026 | 99.69 | 144.0 ■ | 42.2 | 18.20 | 269 | 1.22 | Fail |
| B26-0244 | 06 Apr 2026 | 99.10 | 136.2 | 41.7 | 18.25 | 238 | 1.66 | Pass |
| B26-0234 | 05 Apr 2026 | 99.35 | 135.8 | 41.7 | 18.31 | 264 | 1.41 | Pass |
| B26-0178 | 25 Mar 2026 | 99.53 | 136.9 | 42.1 | 18.45 | 231 | 1.71 | Pass |
| B25-0876 | 18 Nov 2025 | 99.59 | 134.3 | 41.6 | 18.70 | 267 | 1.39 | Pass |
| B25-0863 | 14 Nov 2025 | 99.03 | 134.2 | 42.4 | 18.09 | 272 | 2.06 | Pass |
| B25-0851 | 12 Nov 2025 | 99.20 | 136.5 | 42.2 | 18.39 | 255 | 1.89 | Pass |
| B25-0860 | 08 Nov 2025 | 99.07 | 133.6 | 42.3 | 18.31 | 225 | 1.94 | Pass |
| B25-0842 | 09 Oct 2025 | 99.53 | 137.0 | 41.9 | 18.49 | 268 | 1.33 | Pass |
| B25-0788 | 11 Sep 2025 | 99.41 | 135.8 | 42.3 | 18.28 | 268 | 1.99 | Pass |