Original Feather Microtome Blade S35 A35 R35 H35 N35 C35
1. Original Feather microtome blades, made in Japan with ultra-precision edge
2. Low-profile design compatible with all standard microtome blade holders
3. Six blade types: S35 (standard), A35 (durable), R35 (ribbon), N35 (hard tissue), H35 (resin), C35 (cryostat)
4. Stainless steel construction with special coating for superior cutting performance
5. C35: carbon steel for frozen sections; H35: for plastic resin blocks sectioning at 1-micron
6. 50 blades per box; ISO certified Japanese manufacturing
Product Overview
Feather Microtome Blades are premium Japanese-manufactured disposable blades designed for precision tissue sectioning in histology, pathology, and research laboratories worldwide. Manufactured by Feather Safety Razor Co., Ltd. -- a company with over 90 years of precision blade-making expertise since 1932 -- these blades feature an ultra-precision honed edge with a special proprietary coating that delivers exceptional cutting performance, durability, and consistency across a wide range of tissue types and processing protocols.
We supply the complete range of Feather low-profile microtome blades, each optimised for specific sectioning applications: S-35 (standard universal blade), A-35 (durable routine sectioning), R-35 (optimised for ribbon sectioning with double-spattered edge), N-35 (hard tissue specialist), H-35 (resin-embedded and plastic block sectioning), and C-35 (carbon steel cryostat blade for frozen sections). All blades are 80mm in length, low-profile design, and compatible with all standard microtome blade holders from Leica, Thermo Scientific, Microm, Sakura, and other major manufacturers.
Figure 1 -- Original Japanese-made Feather microtome blades -- precision cutting for histology and pathology
Key Specifications
Brand: Feather (Japan) | Type: Low-Profile Disposable | Length: 80mm | Packaging: 50 Blades/Box | Models: S35 / A35 / R35 / N35 / H35 / C35
Feather Microtome Blade Models -- Selection Guide
| Model | Material | Best For | Key Feature |
|---|---|---|---|
| S-35 | Stainless Steel | Standard paraffin sections | Superior quality from the first section; universal use |
| A-35 | Stainless Steel | Routine paraffin sections | High durability; extended blade life for daily throughput |
| R-35 | Stainless Steel | Ribbon sectioning | Double-spattered edge for strength and ribbon consistency |
| N-35 | Stainless Steel | Hard / dense tissues | Extra edge strength for tough specimens |
| H-35 (H35S) | Coated Stainless Steel | Plastic resin & paraffin blocks | Ultra-sharp coating; sections down to 1 micron |
| C-35 | Carbon Steel | Frozen / cryostat sections | Less curling of sections for easy frozen section handling |
Technical Specifications
| Parameter | Specification |
|---|---|
| Brand | Feather Safety Razor Co., Ltd. (Japan) |
| Blade Type | Low-Profile Disposable Microtome Blade |
| Blade Length | 80 mm |
| Blade Profile | Low-Profile (compatible with all standard low-profile blade holders) |
| Material (S35/A35/R35/N35/H35) | Stainless steel with proprietary coating |
| Material (C35) | Carbon steel |
| Packaging | 50 blades per box |
| Origin | Made in Japan |
| Compatible Holders | Leica, Thermo Scientific, Microm, Sakura, and all standard low-profile blade holders |
How to Choose the Right Feather Blade for Your Application
For Routine Paraffin Sectioning
The S-35 is the universal standard -- ideal for most paraffin-embedded tissue blocks processed through routine H&E protocols. For high-throughput diagnostic laboratories processing large daily volumes, the A-35 offers enhanced durability and extended blade life per station, reducing blade change frequency during the workday. When ribbon sectioning is critical -- for serial section analysis, immunohistochemistry (IHC) slide preparation, or multi-level sectioning -- the R-35 with its double-spattered edge provides superior ribbon consistency and edge strength.
For Challenging or Hard Tissue Specimens
The N-35 is specifically engineered for dense, fibrous, or calcified tissue specimens -- including uterine fibroids, bone marrow cores, calcified arteries, and densely collagenous surgical specimens -- where standard blades may produce chatter artifacts or require excessive force. The specially hardened edge maintains cutting performance through tough tissue while preserving section quality.
For Frozen Sections and Intraoperative Diagnosis
The C-35 carbon steel cryostat blade is optimised for frozen tissue sectioning in intraoperative consultation and Mohs surgery. The carbon steel construction provides the edge characteristics required for cutting unfixed frozen tissue blocks, producing sections with less curling -- a critical advantage when speed and ease of slide preparation directly impact surgical decision-making time. Compatible with all standard cryostat blade holders.
For Plastic Resin and GMA/MMA Embedded Specimens
The H-35 (H35S) features a specialised ultra-sharp coating capable of sectioning plastic resin-embedded blocks down to 1 micron thinness. Designed for research applications involving glycol methacrylate (GMA) or methyl methacrylate (MMA) embedding, including undecalcified bone histology, electron microscopy sample preparation, and high-resolution morphological studies.
The Feather Quality Advantage
Feather Safety Razor Co., Ltd. brings over 90 years of precision blade manufacturing expertise to every microtome blade. Key quality advantages include:
Japanese Manufacturing Precision -- Feather blades are manufactured in Japan under strict quality control standards, with each production batch tested for edge consistency and cutting performance before release.
Proprietary Edge Coating -- A special coating applied to the blade edge reduces friction during sectioning, minimising compression artifacts and producing flatter, more uniform tissue sections with fewer wrinkles.
Ultra-Precision Honing -- Advanced grinding and honing technology produces an exceptionally fine, consistent edge geometry across all blade models, ensuring reliable first-section quality without the need for a "break-in" period.
Consistent Inter-Blade Quality -- Feather's automated manufacturing processes deliver exceptional blade-to-blade consistency within each box, eliminating the variability that can disrupt sectioning workflow when blades from other manufacturers vary in sharpness.
Global Laboratory Standard -- Feather blades are trusted by histology and pathology laboratories in over 100 countries, making them one of the most widely used microtome blade brands worldwide.
FAQ
Which Feather blade should I choose for routine H&E paraffin sections?
The S-35 is the standard choice for most routine paraffin sections. If your laboratory processes high daily volumes, consider the A-35 for extended blade life. For ribbon sectioning or serial sections, the R-35 provides the best ribbon consistency.
Are Feather blades compatible with my microtome?
Yes. Feather low-profile blades (all models except specified high-profile variants) are compatible with all standard low-profile blade holders from Leica, Thermo Scientific (Microm), Sakura, and other major microtome manufacturers. Always verify your blade holder type (low-profile vs. high-profile) before ordering.
Can I use the C-35 cryostat blade for paraffin sections?
The C-35 is specifically designed for frozen sectioning in cryostats. Its carbon steel construction is optimised for cutting unfixed frozen tissue at low temperatures. For paraffin sections, we recommend the stainless steel models (S-35, A-35, R-35, N-35) which are designed for room-temperature paraffin block sectioning.
How many blades are in each box?
Each box contains 50 Feather microtome blades in a convenient dispenser package that allows single-blade removal while keeping the remaining blades protected and organised. This packaging protects the precision edge from damage during storage and handling.
Are these genuine Japanese-made Feather blades?
Yes. We supply 100% genuine Feather blades manufactured in Japan by Feather Safety Razor Co., Ltd. Each box carries authentic Feather branding and lot-numbered packaging for full traceability. We do not supply generic or rebranded alternatives.
Order Genuine Japanese Feather Microtome Blades
We supply the complete range of original Feather microtome blades -- S35, A35, R35, N35, H35, and C35 -- manufactured in Japan, 50 blades per box, compatible with all standard low-profile blade holders. Competitive pricing with worldwide shipping.
Request a quotation or place an order: Contact our team -- specify blade model and quantity. We respond within 12 hours.
