# White marks on standard clear v5 **URL:** https://forum.formlabs.com/t/white-marks-on-standard-clear-v5/44238 **Category:** Materials **Created:** [April 23, 2025, 6:13pm UTC](https://forum.formlabs.com/t/white-marks-on-standard-clear-v5/44238 "2025-04-23T18:13:17Z") **Posts on this page:** 2 **Page:** 1
### Author: ![eyekey](https://avatars.discourse-cdn.com/v4/letter/e/ecd19e/32.png) [@eyekey](https://forum.formlabs.com/u/eyekey) #### Post date: [April 23, 2025, 6:13pm UTC](https://forum.formlabs.com/t/white-marks-on-standard-clear-v5/44238/1 "2025-04-23T18:13:17Z")
what could be causing these white marks on the clear resin? there appears to be non on the support material, only the actual model. printed on 4L washed in wash L with TPM 3 min ultrasonic rinse. 30c water with a drop of dishwasher soap i had a mild fan blowing at them to speed up dry before UV cure I did have the degas option on the ultrasonic cleaner, would that have caused that? Does anyone accurate times and settings for an ultra sonic cleaner rinse? THanks, Ryan ![IMG_0697.HEIC](https://us1.discourse-cdn.com/flex025/uploads/formlabs/original/3X/c/7/c7ac296f6abdb529f5ea3594c71e20dbd45deebe.jpeg) ![IMG_0696.HEIC](https://us1.discourse-cdn.com/flex025/uploads/formlabs/original/3X/a/6/a6217ff4b5a6affc69d66dc802198bf8d25aaa39.jpeg) ---
### Author: ![verdugod](https://sea1.discourse-cdn.com/flex025/user_avatar/forum.formlabs.com/verdugod/32/20335_2.png) [@verdugod](https://forum.formlabs.com/u/verdugod) #### Post date: [April 25, 2025, 2:04pm UTC](https://forum.formlabs.com/t/white-marks-on-standard-clear-v5/44238/2 "2025-04-25T14:04:48Z")
Hi @eyekey thanks for sharing and sorry you’re experiencing this. The forum team reviewed this and we think the ultrasonic bath could be the culprit. Could you re-try printing this but skip the ultrasonic bath and swap for your water. w/soap combo. As a review, here are our [standard TPM washing steps](https://support.formlabs.com/s/article/Washing-prints-with-TPM?language=en_US). Let us know how it goes! Diana