Slide-Fix™ PAP Jar with Orange Screw Cap — Coplin-Style Slide Staining Jar, PPC, Sterile, 10/Bag (222-5450-E8S)
The Caplugs® Evergreen Slide-Fix™ PAP jar is a Coplin-style vertical-well staining vessel designed to hold up to 10 standard 25 × 75 mm microscope slides on edge while fully immersed in fixative, staining solution, or reagent. Constructed from optically clear polypropylene copolymer (PPC) with a pre-assembled orange screw cap, part number 222-5450-E8S ships sterile in a 10/Bag assembled pack — ready to drop directly into histology, cytology, and molecular pathology staining protocols without additional preparation.
Technical Specifications
| Specification | Value |
|---|---|
| Part Number (MPN) | 222-5450-E8S |
| Product Line | Slide-Fix™ |
| Product Type | PAP Jar / Coplin-Style Slide Staining Jar |
| Material | Polypropylene Copolymer (PPC) |
| Jar Body Color | Natural (transparent) |
| Cap Color | Orange |
| Closure | Orange PPC screw cap — pre-assembled |
| Slide Capacity | Up to 10 standard 25 × 75 mm microscope slides |
| Sterility | Sterile |
| Pack Size | 10/Bag Assembled |
| BPA / Phthalate / Latex | BPA-Free, Phthalate-Free, Latex-Free |
| Country of Origin | USA |
Applications
- H&E staining series: Use sequentially arranged jars for hematoxylin, eosin, alcohol, and xylene steps — orange caps provide instant visual differentiation between stations on a busy histology bench.
- Papanicolaou (PAP) staining: The Coplin format was developed specifically for cytology slide staining; the jar geometry ensures even reagent immersion for consistent PAP smear results.
- Formalin fixation and alcohol dehydration: PPC's full compatibility with formalin and graded alcohols (70%, 95%, 100% EtOH) makes these jars suitable for tissue fixation and sequential dehydration series.
- IHC deparaffinization and antigen retrieval: The screw cap seals volatile xylene substitutes effectively, and the transparent body allows monitoring of slide position and reagent level without opening the jar.
- Special stains: PAS, Masson's trichrome, Giemsa, and AFB protocols all benefit from the 10-slide capacity and color-coded cap system for rack-to-rack organization.
- FISH hybridization and wash steps: The clear PPC body enables visual confirmation of probe solution coverage; color-coded caps help differentiate wash buffer jars from hybridization jars.
Chemical Resistance
| Reagent / Condition | Compatibility |
|---|---|
| Formalin (neutral buffered and unbuffered) | Excellent |
| Ethanol / isopropanol (all grades) | Excellent |
| Hematoxylin and eosin staining solutions | Excellent |
| Xylene substitutes (e.g., Histoclear, Sub-X) | Excellent |
| IHC reagents and aqueous buffers | Excellent |
| Dilute acids and bases | Excellent |
| True xylene / aromatic solvents | Not recommended — use xylene substitutes |
| Chlorinated solvents (e.g., chloroform) | Not recommended |
Quality & Procurement
Made in USA under ISO-compliant manufacturing practices, these Slide-Fix™ jars are produced from FDA-compliant, BPA-free, phthalate-free, and latex-free PPC resin. Each jar ships sterile and pre-assembled, eliminating cap-matching steps at the bench. LabSupplies.com is an authorized Caplugs® Evergreen dealer and ships from USA inventory, typically the same business day for stocking items. Tiered pricing is available for high-volume histology and cytology laboratories, hospital pathology departments, and grant-funded research programs. The Slide-Fix™ line also offers the same jar in alternative cap colors — natural (222-5450-08S), blue (222-5450-B8S), green (222-5450-G8S), and fuchsia (222-5450-K8S) — allowing labs to build a complete color-coded staining rack system from a single product line.
Frequently Asked Questions
Are these PAP jars supplied sterile, or do they need to be sterilized before use?
These jars are supplied sterile and pre-assembled — the orange cap is already fitted to the jar body when you open the bag, so they are ready for immediate use in formalin fixation, staining, or other aseptic workflows without any additional preparation.
Is the jar body truly transparent, and can I monitor reagent levels without removing the cap?
Yes. The natural PPC jar body provides excellent optical clarity, allowing technicians to visually confirm slide position, reagent fill level, and reagent color from outside the jar. This is particularly valuable when working with volatile fixatives where minimizing cap removal reduces fume exposure.
Can these jars be used with true xylene, or only xylene substitutes?
PPC offers strong compatibility with xylene substitutes such as Histoclear and Sub-X, which are the standard choice for modern histology workflows. True xylene and other aromatic solvents are not recommended, as they can attack polypropylene-based plastics over time. If your protocol requires true xylene, glass Coplin jars should be used instead.
How does the orange cap coordinate with the rest of the Slide-Fix™ color-coding system?
The Slide-Fix™ line is available in five cap colors — natural, blue, green, orange, and fuchsia — all sharing the same jar body and screw-cap design. Laboratories typically assign a specific color to each reagent class or staining step (for example, orange for fixatives or counterstains requiring immediate recognition), allowing staff to work quickly and accurately without reading labels at every step.