# Biolab RAPID-PAP Cytoplasm Stain B 500 mL | Cytology PAP Stain

## Biolab RAPID-PAP Cytoplasm Stain B – 500 mL | Professional Cytology PAP Stain

**Biolab RAPID-PAP Cytoplasm Stain – B** is a professional cytology staining reagent supplied as part of the **Biolab RAPID-PAP Papanicolaou staining system**.

The reagent is intended for use as one of the cytoplasmic staining stages within a validated PAP staining sequence and is suitable for professional cytology, pathology and diagnostic laboratory workflows.

This listing is for **Cytoplasm Stain B only** in a **500 mL bottle**.

**Brand:** Biolab Diagnostics  
**Product:** RAPID-PAP Cytoplasm Stain – B  
**Catalogue No.:** CY 1590  
**Pack Size:** 500 mL  
**Category:** Cytology / Papanicolaou Staining Reagent  
**System:** Biolab RAPID-PAP  
**Intended User:** Professional Laboratory Personnel

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## Primary Uses & Applications

Biolab RAPID-PAP Cytoplasm Stain B is intended for use within professional **Papanicolaou / PAP cytology staining workflows**.

Typical applications may include:

-   Cervical cytology slide staining
-   PAP smear staining workflows
-   Gynaecological cytology
-   Non-gynaecological cytology where validated
-   Cytopathology laboratories
-   Hospital pathology departments
-   Diagnostic laboratory cytology
-   Medical college cytology laboratories
-   Research cytology applications where appropriately validated

The reagent should be used according to the current Biolab RAPID-PAP procedure and the laboratory's validated staining SOP.

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## How RAPID-PAP Cytoplasm Stain B Works

Papanicolaou staining is a multi-stage cytological staining method designed to produce contrast between cell nuclei and cytoplasmic structures.

Biolab RAPID-PAP Cytoplasm Stain B forms part of the cytoplasmic staining sequence in the manufacturer's RAPID-PAP system.

The complete Biolab RAPID-PAP product family includes:

-   RAPID-PAP Nuclear Stain
-   RAPID-PAP Cytoplasm Stain – A
-   **RAPID-PAP Cytoplasm Stain – B**
-   RAPID-PAP Dehydrant
-   Complete RAPID-PAP Stain Kit

When used in the correct staining sequence, these components help produce differential cellular staining for microscopic evaluation.

**Important:** Biolab's public product page does not currently publish the exact dye composition or standalone contact time for Cytoplasm Stain B. The current bottle label and manufacturer IFU should therefore be treated as the definitive technical reference.

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## Key Features

-   **Brand:** Biolab Diagnostics
-   **Product:** RAPID-PAP Cytoplasm Stain – B
-   **Catalogue No.:** CY 1590
-   **Pack Size:** 500 mL
-   Professional cytology staining reagent
-   Part of Biolab's RAPID-PAP staining range
-   Designed for PAP / Papanicolaou staining workflows
-   Individual replacement / standalone reagent within the RAPID-PAP system
-   Suitable for pathology and cytology laboratories
-   Convenient 500 mL laboratory pack
-   Historical Biolab catalogue lists approximately 3-year shelf life
-   For trained professional laboratory use

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## Cytoplasm Stain B vs Other RAPID-PAP Components

| RAPID-PAP Component | Role in System |
| --- | --- |
| **RAPID-PAP Nuclear Stain** | Nuclear staining stage |
| **RAPID-PAP Cytoplasm Stain A** | First / separate cytoplasmic staining component according to Biolab RAPID-PAP procedure |
| **RAPID-PAP Cytoplasm Stain B** | Additional cytoplasmic staining component within the RAPID-PAP sequence |
| **RAPID-PAP Dehydrant** | Dehydration / processing stage |
| **Complete RAPID-PAP Kit** | Complete multi-reagent rapid PAP staining workflow |

**Cytoplasm Stain A and Cytoplasm Stain B are separate products and should not be treated as interchangeable.**

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## Benefits of RAPID-PAP Cytoplasm Stain B

-   Designed specifically for professional cytology staining
-   Part of a coordinated RAPID-PAP reagent system
-   Useful as an individual replacement reagent when other kit components remain available
-   500 mL pack suitable for routine laboratory workloads
-   Supports standardisation when the laboratory uses the complete Biolab RAPID-PAP system
-   Avoids the need to replace an entire kit when only Cytoplasm Stain B is required
-   Suitable for hospital, pathology and diagnostic laboratory procurement

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## Is Cytoplasm Stain B the Complete RAPID-PAP Kit?

**No.**

This product contains only **Biolab RAPID-PAP Cytoplasm Stain B – 500 mL**.

It does not by itself include:

-   RAPID-PAP Nuclear Stain
-   Cytoplasm Stain A
-   RAPID-PAP Dehydrant
-   Other complete-kit accessories or processing reagents

If your laboratory requires the complete staining system, select the complete Biolab RAPID-PAP Stain Kit instead.

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## Use within the Rapid PAP Staining System

Biolab separately lists a **RAPID-PAP STAIN KIT for approximately 250 smears** as a rapid PAP staining system.

Cytoplasm Stain B is supplied separately for laboratories that require an individual reagent rather than the complete staining kit.

The exact stage, sequence and exposure time for Cytoplasm Stain B should follow the current Biolab RAPID-PAP IFU.

**Do not use timings from another PAP stain manufacturer unless your laboratory has independently validated the alternative procedure.**

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## General Professional Workflow

A complete PAP staining workflow may generally involve:

1.  Prepare the cytology smear.
2.  Fix the specimen using the validated laboratory procedure.
3.  Perform the appropriate nuclear staining stage.
4.  Wash / differentiate according to the RAPID-PAP protocol.
5.  Apply Cytoplasm Stain A at the prescribed stage.
6.  Apply **Cytoplasm Stain B** at the prescribed stage.
7.  Perform required rinsing / differentiation.
8.  Complete dehydration and clearing.
9.  Mount the slide.
10.  Examine microscopically.

This is a general workflow description only. The exact Biolab sequence should always be followed.

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## Applications in Cytology Laboratories

Biolab RAPID-PAP reagents may support professional workflows involving:

-   Cervical PAP smear preparation
-   Gynaecological cytology
-   Cytopathology screening
-   Hospital cytology departments
-   Teaching laboratories
-   Non-gynaecological cytology specimens where the method has been validated

Specimen type and suitability must be determined by the laboratory's validated procedure.

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## Storage & Shelf Life

Biolab's historical catalogue lists approximately **3 years shelf life** for RAPID-PAP Cytoplasm Stain B.

The actual expiry printed on the supplied bottle must always be followed.

Professional handling precautions include:

-   Keep the bottle securely closed.
-   Store according to the conditions printed on the current bottle.
-   Protect the reagent from contamination.
-   Do not pour used stain back into the original bottle.
-   Do not interchange caps with other reagents.
-   Do not mix unrelated lots unless validated by the laboratory.
-   Do not use after the manufacturer-printed expiry date.

**The current Biolab product label and IFU take precedence over general website information.**

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## Product Specifications

|     |     |
| --- | --- |
| **Product Name** | RAPID-PAP Cytoplasm Stain – B |
| **Brand** | Biolab Diagnostics |
| **Catalogue No.** | CY 1590 |
| **Pack Size** | 500 mL |
| **Product Category** | Cytology / Papanicolaou Stain Reagent |
| **System** | Biolab RAPID-PAP |
| **Primary Role** | Cytoplasmic staining component within RAPID-PAP workflow |
| **Shelf Life** | Approx. 3 Years according to historical Biolab catalogue; verify actual bottle expiry |
| **Exact Composition** | Refer to current Biolab label / IFU |
| **Staining Time** | Follow current Biolab RAPID-PAP procedure |
| **Intended User** | Professional Laboratory Personnel |

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## Why Buy Biolab RAPID-PAP Cytoplasm Stain B from Microsidd India?

PAP staining reagents can differ in **formulation, staining sequence, timing, pack size and system compatibility**.

Microsidd clearly identifies this product as **Biolab RAPID-PAP Cytoplasm Stain B – CY 1590 – 500 mL** to help laboratories avoid ordering the wrong PAP staining component.

| Buying Factor | Microsidd India | General Online Store / Marketplace | Typical Offline Store |
| --- | --- | --- | --- |
| **Exact Reagent** | Cytoplasm Stain B clearly identified | May be listed generically as PAP stain | Depends on staff familiarity |
| **Catalogue Number** | CY 1590 clearly stated | Often omitted | May require physical pack inspection |
| **Pack Size** | 500 mL clearly stated | Seller dependent | Depends on stock |
| **A vs B Identification** | Difference clearly highlighted before ordering | May not explain the difference | Depends on staff expertise |
| **Professional Information** | IFU and SOP verification emphasised | Listing quality varies | Usually verbal guidance only |
| **GST Invoice** | Available for eligible orders | Seller dependent | Store dependent |
| **Bengaluru Presence** | RT Nagar, Bengaluru | Seller location may vary | Depends on local supplier |
| **India-Wide Ordering** | Available to serviceable PIN codes | Platform dependent | Usually local purchase only |

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## Buy RAPID-PAP Cytoplasm Stain B in Bangalore

**Microsidd India** supplies professional cytology stains, histopathology reagents, pathology consumables and laboratory diagnostic products from **RT Nagar, Bengaluru**.

Customers searching for **Biolab RAPID-PAP Cytoplasm Stain B Bangalore**, PAP stain B Bengaluru, cytology stain near me, Biolab PAP reagent RT Nagar, cytopathology stain Bangalore or Biolab Diagnostics supplier Karnataka can check current availability through Microsidd.com.

Laboratories requiring multiple bottles should confirm current stock, batch and expiry before ordering.

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## Microsidd India – NAP

**Business Name:** Microsidd India  
**Address:** #09 Green Chambers, 14th Cross, RT Nagar, Bengaluru – 560032, Karnataka, India  
**Phone / WhatsApp:** +91 63667 72288  
**Email:** support@microsidd.com  
**Website:** https://microsidd.com  
**Working Hours:** Monday to Saturday, 10:00 AM – 6:00 PM IST

[**View Microsidd India on Google Maps**](https://share.google/NWhhEfmvlEyIfAShq)

Browse related professional supplies in [**Microsidd Laboratory Needs**](https://microsidd.com/collections/laboratory-needs).

For Bengaluru ordering and pickup information, visit [**Microsidd India – Laboratory & Medical Supplies Bangalore**](https://microsidd.com/pages/microsidd-india-bangalore).

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## Frequently Asked Questions – Biolab RAPID-PAP Cytoplasm Stain B

### What is Biolab RAPID-PAP Cytoplasm Stain B?

It is a professional cytology reagent designed as one of the cytoplasmic staining components within Biolab's RAPID-PAP system.

### What is the pack size?

The bottle contains **500 mL**.

### What is the catalogue number?

Biolab identifies RAPID-PAP Cytoplasm Stain B as **CY 1590**.

### Is this the complete RAPID-PAP kit?

No. This listing contains only **Cytoplasm Stain B**.

### Is Cytoplasm Stain B the same as Stain A?

No. Stain A and Stain B are separate Biolab reagents with different catalogue numbers and separate roles within the staining sequence.

### What is the catalogue number for Stain A?

Biolab lists Cytoplasm Stain A separately as CY 1585. Cytoplasm Stain B is CY 1590.

### Is this the Nuclear Stain?

No. RAPID-PAP Nuclear Stain is a separate product.

### Is Dehydrant included?

No. RAPID-PAP Dehydrant is sold as a separate reagent unless you purchase a complete kit that specifically includes it.

### What is Cytoplasm Stain B used for?

It forms part of the cytoplasmic staining sequence in professional PAP / Papanicolaou cytology staining.

### Can this reagent be used alone?

No PAP staining result should be expected from this reagent alone. It is intended to be used within an appropriate multi-stage staining system.

### What is the exact formulation?

Biolab's current public product listing does not publish the complete formulation. Refer to the current bottle label and IFU.

### What is the contact time?

Use the timing specified in the current Biolab RAPID-PAP protocol. Do not copy timings from another PAP staining system.

### Is this part of Biolab's rapid approximately 3-minute PAP system?

Yes. Cytoplasm Stain B belongs to the RAPID-PAP product family. The approximately 3-minute description applies to the complete validated RAPID-PAP system, not to this reagent alone.

### Can Cytoplasm Stain B be mixed with another brand's PAP reagents?

Do not assume interchangeability. Laboratories should validate any change in manufacturer, stain formulation or sequence before routine use.

### What specimens are suitable?

Use specimens validated under your laboratory's PAP cytology SOP. Cervical cytology is a common application, while other specimen types should be validated before routine use.

### What is the shelf life?

A historical Biolab catalogue lists approximately **3 years**. Always follow the expiry printed on the actual bottle supplied.

### How should the bottle be stored?

Follow the storage conditions printed on the current Biolab label / IFU. Keep the reagent tightly closed and protected from contamination.

### Can expired stain be used?

No. Do not use the reagent after the manufacturer-printed expiry date.

### What if staining quality changes?

Check the reagent expiry, storage, contamination, slide fixation, staining sequence, contact time and laboratory QC before continuing routine use.

### Is this suitable for home use?

No. It is intended for trained professional laboratory personnel.

### Where can I buy Biolab Cytoplasm Stain B in Bangalore?

Biolab RAPID-PAP Cytoplasm Stain B can be ordered through Microsidd India in RT Nagar, Bengaluru, subject to current stock and batch availability.

### Does Microsidd deliver outside Bengaluru?

Yes. Microsidd accepts orders for serviceable locations across India, subject to stock and courier availability.

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## Medical & Laboratory Disclaimer

**Biolab RAPID-PAP Cytoplasm Stain B is a professional laboratory staining reagent intended for trained laboratory personnel.**

It should be used according to the current manufacturer IFU and the laboratory's validated cytology SOP.

Staining performance may be influenced by:

-   Specimen collection
-   Fixation quality
-   Slide preparation
-   Stain sequence
-   Contact time
-   Reagent condition
-   Contamination
-   Washing / differentiation
-   Dehydration and clearing
-   Mounting
-   Microscope quality
-   Operator technique

A PAP staining reagent does not independently establish a clinical diagnosis.

Final microscopic interpretation should be performed by appropriately qualified cytology / pathology professionals using all relevant clinical and laboratory information.

This page is intended for product identification, procurement and educational reference and does not replace the Biolab IFU, laboratory SOP or professional interpretation.

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## No Return / No Exchange – Verify Stain A vs Stain B Before Ordering

**This is a professional laboratory reagent and is method-, formulation-, pack-, storage- and expiry-sensitive.**

Please verify before ordering:

-   **Brand:** Biolab Diagnostics
-   **Product:** RAPID-PAP Cytoplasm Stain – B
-   **Catalogue No.:** CY 1590
-   **Pack:** 500 mL
-   **Required Component:** Stain B, not Stain A
-   Required PAP staining system
-   Laboratory SOP compatibility
-   Current batch and expiry

A correctly supplied bottle cannot normally be returned or exchanged because Cytoplasm Stain A, Nuclear Stain, Dehydrant, another manufacturer's PAP reagent or another pack size was actually required.

Laboratory stains and reagents are contamination-sensitive, storage-sensitive and expiry-sensitive consumables and cannot normally be returned to saleable inventory after correct delivery.

Genuine cases involving incorrect supply, verified transit damage, materially misdescribed goods or any remedy required under applicable Indian law will be handled according to the [**Microsidd Refund, Return, Replacement & Cancellation Policy**](https://microsidd.com/pages/cancellation-and-refunds).

**An original, continuous, unedited and uncut unboxing video is compulsory for delivery-related claims involving an incorrect, missing or damaged product.**

Begin recording before opening the shipment. Open the outer carton carefully by **cutting the sealing tape with a blade or suitable cutter; do not tear the carton**. Keep the courier label, sealed Biolab bottle, product name, catalogue number, pack size, batch and expiry continuously visible.

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## Biolab RAPID-PAP Cytoplasm Stain B – Product Entity Summary

**Product:** RAPID-PAP Cytoplasm Stain – B  
**Brand:** Biolab Diagnostics  
**Catalogue No.:** CY 1590  
**Pack Size:** 500 mL  
**Category:** Cytology / Papanicolaou Staining Reagent  
**System:** Biolab RAPID-PAP  
**Role:** Cytoplasmic Staining Component  
**Different From:** Cytoplasm Stain A, Nuclear Stain and RAPID-PAP Dehydrant  
**Application:** Professional Cytology / PAP Staining Workflow  
**Composition:** Refer to current manufacturer label / IFU  
**Shelf Life:** Approx. 3 Years according to historical Biolab catalogue; verify actual supplied batch  
**Intended User:** Professional Laboratory Personnel  
**Seller:** Microsidd India  
**Seller Location:** RT Nagar, Bengaluru, Karnataka, India

## Details

- **Price:** 1995.0 INR
- **Vendor:** Biolab
- **Type:** Histopathology / Cytology Stain

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 1995.00 INR | In stock |

## Images

- Biolab RAPID-PAP Cytoplasm Stain B 500 ml CY 1590 professional cytology reagent
- Biolab RAPID-PAP Cytoplasm Stain B 500 ml CY 1590 professional cytology reagent
- Biolab RAPID-PAP Cytoplasm Stain B 500 ml CY 1590 professional cytology reagent
- Biolab RAPID-PAP Cytoplasm Stain B 500 ml CY 1590 professional cytology reagent
- Biolab RAPID-PAP Cytoplasm Stain B 500 ml CY 1590 professional cytology reagent

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> Source: [Microsidd India](https://microsidd.com/products/biolab-rapid-pap-cytoplasm-stain-b-500ml)
> Updated: 2026-11-11