---
title: "Film Washi \"F\" 135 Bulk Roll 30.5 m"
url: https://shop.neoanaloglab.com/en/products/washi-f-bulk-30m
language: en
description: "A 30.5 m bulk roll of Film Washi's fluorographic X-ray stock, ISO 100 on 100 µm polyester, for loading your own 135 cassettes."
---

# Film Washi "F" 135 Bulk Roll 30.5 m

Film Washi · Film · 135 bulk roll / 30.5 m / ISO 100

- Price: ¥31,800 (JPY, consumption tax included)
- Availability: Sold out
- Condition: New
- SKU: WASH-BULKROLL-F-ISO-100-30M
- Ships outside Japan: Yes, by Japan Post

## Description

A 30.5 m bulk roll of Film Washi's fluorographic X-ray stock, ISO 100 on 100 µm polyester, for loading your own 135 cassettes.

This is 30.5 m (100 ft) of Film Washi's "F" stock for self-loading 135 cassettes; the bulk roll exists because Lomig Perrotin built himself a bulk loader, announced in August 2025. "F" is a fluorographic X-ray film — the stock used for mass lung screening — coated by machine in another factory and converted by Film Washi in Brittany, and the dealer list describes the bulk roll with the same ISO 100 and 100 µm polyester figures as the cassette and 120 versions. Because the emulsion sits on one side only, unlike duplitized dental and medical sheet film, it develops as an ordinary black and white negative: Film Washi publishes 9 min in Rodinal 1+25, 8 min in Ilfotec LC29 1+19, 11 min in D-76 1+1 and 4.5 min in HC-110 dilution A at 20 °C, with Ilford FP4 times for any developer not listed. It is orthochromatic to a maximum of 575 nm, so reds record dark and a red safelight is permitted. There is no anti-halation layer, so highlights bloom back through the base as a soft halo — the datasheet rates the grain high and the contrast medium — and that same absent layer is why light pipes down the roll: expect cassettes you load yourself to need the load-in-shade and six-blank-frame discipline Film Washi specifies for its factory-loaded 135. For anyone considering cine use, Film Washi notes the perforation is KS (photo), not BH, and states it cannot be held responsible for gear damage in such use. Film Washi publishes no product page or datasheet for the bulk roll, so we cannot tell you the spool type, the packaging or how many cassettes it yields — ask us and we will put the question to the maker.

## Specifications

| Specifications | |
| --- | --- |
| Format | 135 bulk / 30.5 m |
| Length | 30.5 m (100 ft) |
| Speed | ISO 100 |
| Process | Black and white negative |
| Base | Polyester, 100 µm, single-coated |
| Spectral sensitivity | Orthochromatic, maximum 575 nm |
| Safelight | Red |
| Development | 20 °C — Rodinal 1+25 9 min / Ilfotec LC29 1+19 8 min / D-76 1+1 11 min / HC-110 dil. A 4.5 min; otherwise use Ilford FP4 data |
| Perforation | KS (photo), not BH |

## Shipping and returns

- Free shipping within Japan on orders of 15,000 JPY or more.
- Roll film ships free from 3 rolls of 135 or 5 rolls of 120.
- Otherwise 500 JPY for small tracked roll-film parcels and 900 JPY for other tracked shipments.
- Orders ship within 2-5 business days after payment is confirmed (weekends and Japanese holidays not counted). Delivery within Japan usually takes 1-2 days (2-4 for small roll-film parcels).
- Ships to 165 countries and regions by Japan Post at Japan Post's own postage (International Air Packet, International Parcel by air, EMS), priced by destination and packed weight.
- Returns: Within 30 days of delivery. Change-of-mind returns must be unopened and unused; damaged or defective items are accepted even if opened.

## Questions

- **Does film need to be refrigerated?** Store unexposed film in a cool, dark place away from heat and humidity. For storage beyond a few months, refrigeration below 10°C is recommended. Let film return to room temperature in its packaging for 2-3 hours before shooting to avoid condensation.
- **What is the difference between C-41, E-6, and black-and-white processing?** C-41 develops color negative film, E-6 develops reversal (slide) film, and black-and-white negative film uses dedicated B&W chemistry. The Neo Analog Lab mail-in processing service handles C-41, E-6, ECN-2, and black-and-white.
- **What is the difference between 135 and 120 film?** 135 is standard 35mm cassette film, usually 24 or 36 exposures. 120 is medium-format roll film: about 16 frames at 6x4.5, 12 at 6x6, or 10 at 6x7. Check which format your camera takes before ordering.

## Images

- https://shop.neoanaloglab.com/product-images/products/prod_washi_f_bulk/FBULK30M_product_00.jpg

---

Prices and stock as of: 2026-10-20T04:00:25.978Z · https://shop.neoanaloglab.com/en/products/washi-f-bulk-30m