Key Features and Specifications

• Optical System:
  Infinity optical system that provides clear, bright, and high-contrast images across the entire field of view.

• Eyepieces:
  Standard 10× widefield eyepieces with a field number of 20, providing a wide and comfortable viewing area.

• Observation Head:
  Binocular viewing head inclined at 30°, with an interpupillary distance adjustable from 48 mm to 75 mm. The diopter adjustment allows easy focusing for individual users.

• Objectives:
  Equipped with Plan Achromat objectives that are anti-fungal coated for longevity.

  • 4× (NA 0.10, working distance 27.8 mm)

  • 10× (NA 0.25, working distance 8.0 mm)

  • 40× (NA 0.65, working distance 0.6 mm)

  • 100× oil immersion (NA 1.25, working distance 0.13 mm)

• Stage:
  A mechanical, rackless stage with X-Y coaxial controls for smooth slide movement. The travel range is approximately 76 mm (X) × 30 mm (Y). Its rackless design increases safety and prevents snagging during use.

• Condenser:
  Abbe condenser (NA 1.25) with an adjustable iris diaphragm for proper light control and optimal image contrast.

• Illumination:
  Built-in long-life LED illumination that provides bright, uniform lighting with daylight color balance. It consumes very little power and requires minimal maintenance, ideal for continuous use in classrooms and labs.

• Focusing Mechanism:
  Coaxial coarse and fine focus knobs on both sides of the microscope. The coarse focus travel distance is about 15 mm, and the fine adjustment allows for precise focusing down to 2.5 micrometers.

• Body and Build:
  The frame is made from die-cast aluminum, ensuring rigidity and long-term durability. The optical components are treated with anti-fungal coatings, making the CX23 suitable for use in humid or tropical environments.

• Ergonomic Design:
  Compact, lightweight, and easy to handle. Includes a built-in carrying handle, a power cord storage compartment, and an anti-theft slot for secure use in shared environments.

• Weight:
  Approximately 5.9 kilograms, making it portable and easy to move between classrooms or laboratories.

A Pap Smear Kit (also known as a Cervical Cytology Collection Kit or Pap Test Kit) is a medical diagnostic collection set used to obtain cells from the cervix and endocervical canal for examination under a microscope.

The Pap smear test is primarily used for screening and early detection of cervical cancer and precancerous changes caused by human papillomavirus (HPV) infection. It can also help detect infections or inflammation in the female reproductive tract.

Key Features and Specifications

• Sample Type: Whole blood, serum, or plasma

• Sample Volume: Approximately 0.09 mL (90 µL) to 0.12 mL (120 µL)

• Testing Time: About 12 minutes per test

• Analyzer Size: Around 25 cm (length) × 20 cm (width) × 30 cm (height)

• Weight: Approximately 4–4.6 kg, making it portable and easy to move

• Detection Principle: Photo-electric colorimetry and transmission turbidimetry

• Reagent Format: Single-use reagent discs containing lyophilized reagents

• Data Storage: Can store up to 500,000 test results

• Connectivity: USB and LAN ports for data transfer and integration with laboratory systems

• Maintenance: Minimal, as the analyzer uses pre-sealed reagent discs and has no complex tubing or valves

Measurement Methods & Corresponding Reagents

1. Ion-Selective Electrode (ISE) Method (Most common in modern analyzers)

Reagents include:

• Internal standard (reference solution)

• Electrolyte solution for K⁺ electrode balance

• Conditioning solution

• Electrode cleaning solution

• Calibrators (Low & High K⁺)

Principle:

Potassium-selective membranes generate an electrical potential when exposed to K⁺ ions.
The potential difference is proportional to potassium concentration.
ISE is fast, accurate, and ideal for automated analyzers.

2. Turbidimetric/Colorimetric Tetraphenylboron Method

How it works:

1. Potassium reacts with sodium tetraphenylboron.

2. Forms a turbid or cloudy precipitate.

3. The degree of turbidity is measured photometrically at 510–550 nm.

4. Intensity correlates with potassium concentration.

Reagents contain:

• Sodium tetraphenylboron

• Buffer solution

• Surfactants

• Stabilizers

• Preservatives

Used in: Semi-auto analyzers and manual systems.

Packaging Formats

• Single-liquid reagent bottles

• Multi-solution electrolyte packs (for ISE analyzers)

• Ready-to-use liquid stable reagents

• Analyzer-specific cartridges

Typical sizes: 25 ml, 50 ml, 100 ml, 250 ml.

Sample Types

• Serum

• Plasma

• Urine (may require dilution)

• Whole blood (in ISE/blood gas analyzers)