---
title: "Polyester Lump Drop Rates (JP server)"
description: "Polyester Lump drop rates on the JP server: 3-8 1.64% (550 samples), 6-4 2.13% (423), BI-7 2.00% (100); 5 stages in total. Updated 2026-10-23. Crowdsourced Arknights drop data by Penguin Statistics."
lang: en
server: JP
item_id: "30034"
as_of: 2026-10-23T14:49:35Z
time_zone: UTC+9
rows: 5
rows_total: 5
canonical: "https://penguin-stats.io/en/result/jp/item/30034"
api: "https://penguin-stats.io/PenguinStats/api/v2/result/matrix?server=JP&itemFilter=30034&show_closed_zones=true"
license: CC BY-NC 4.0
license_url: https://creativecommons.org/licenses/by-nc/4.0/
attribution: "Data: Penguin Statistics (penguin-stats.io), CC BY-NC 4.0"
---

# Polyester Lump Drop Rates (JP server)

Server: [CN server](https://penguin-stats.io/en/result/cn/item/30034.md) · [US server](https://penguin-stats.io/en/result/us/item/30034.md) · **JP server** · [KR server](https://penguin-stats.io/en/result/kr/item/30034.md)

Drops of Polyester Lump by stage on the JP server, by percentage, highest first: 5 of 5 stages

| Stage | ID | Loots | Samples | Percentage | Sanity Required Per Item | Sanity | Time Range |
| --- | --- | ---: | ---: | ---: | ---: | ---: | --- |
| [9-7](https://penguin-stats.io/en/result/jp/stage/main_9/main_09-06.md) Episode 9 | `main_09-06` | 2 | 53 | 3.77% | 476.95 | 18 | 2022-03-17 until now |
| [12-18](https://penguin-stats.io/en/result/jp/stage/main_12/main_12-16.md) Episode 12 (Standard) | `main_12-16` | 2 | 53 | 3.77% | 556.44 | 21 | 2023-10-24 until now |
| [6-4](https://penguin-stats.io/en/result/jp/stage/main_6/main_06-04.md) Episode 6 | `main_06-04` | 9 | 423 | 2.13% | 845.86 | 18 | 2020-06-30 until now |
| [BI-7](https://penguin-stats.io/en/result/jp/stage/permanent_sidestory_11_zone1/act14side_07_perm.md) Break The Ice - Side Story | `act14side_07_perm` | 2 | 100 | 2.00% | 900.00 | 18 | 2023-06-27 until now |
| [3-8](https://penguin-stats.io/en/result/jp/stage/main_3/main_03-08.md) Episode 3 | `main_03-08` | 9 | 550 | 1.64% | 1100.24 | 18 | 2020-01-16 until now |

Samples: runs of the stage reported in the time range. Loots: total number of the item dropped in those runs. Percentage = Loots ÷ Samples, the expected number dropped per run, which can exceed 100%. Sanity Required Per Item = Sanity ÷ Percentage. Time Range: since the drop table of the stage last changed.

Updated 2026-10-23 23:49 (UTC+9). [Full data (JSON)](https://penguin-stats.io/PenguinStats/api/v2/result/matrix?server=JP&itemFilter=30034&show_closed_zones=true). License: [CC BY-NC 4.0](https://creativecommons.org/licenses/by-nc/4.0/)

## Related Items

- [Polyester Pack](https://penguin-stats.io/en/result/jp/item/30033.md) `30033`
- [Polyester](https://penguin-stats.io/en/result/jp/item/30032.md) `30032`
- [Ester](https://penguin-stats.io/en/result/jp/item/30031.md) `30031`