Description
Product Overview
The EISCO Turbidity Tube Stopper with Secchi Disc is engineered as a precise replacement component for the PH1120148 series of turbidity tubes. Constructed from a high‑grade rubber material, the stopper provides an airtight seal that prevents leakage and contamination during sample handling. The attached Secchi disc is fabricated from water‑resistant, impact‑tolerant plastic and features alternating black and white quadrants that give a clear visual cue for turbidity assessment. The stopper measures 48 mm in diameter, while the Secchi disc below it measures 42 mm, creating a compact yet functional assembly that fits snugly into the standard 2‑inch tube opening. The combined length, including the ergonomic knob, is 80 mm (3.1 inches), offering a balanced profile that is easy to grip and operate. Designed for both laboratory benches and portable field kits, this component maintains dimensional stability across a wide temperature range, ensuring reliable performance in diverse environments. The product dimensions of 3.1 × 1.9 × 1.9 inches and weight of 4.8 oz make it lightweight for transport yet robust enough for repeated use. Manufactured by EISCO, a reputable name in scientific instrumentation, the stopper adheres to strict quality standards and is compatible with existing turbidity measurement protocols.
![[Product front view showing all components]](https://www.diaperhub.store/wp-content/uploads/2026/07/0b2f49dcb1594cb9b350e5b6486af111.jpg)
Usage
When conducting water quality analysis, the EISCO Turbidity Tube Stopper with Secchi Disc simplifies sample preparation and measurement. Users insert the stopper into the tube, ensuring the rubber seal engages the tube wall to create a leak‑free environment. The Secchi disc then provides a visual reference point that can be aligned with calibrated turbidity scales, allowing technicians to quickly estimate sample clarity. This stopper is suitable for routine monitoring of drinking water, wastewater treatment plants, environmental field surveys, and research laboratory experiments. Its design accommodates both manual and automated turbidity meters, making it a versatile accessory for a range of analytical instruments. The heavy‑duty rubber component tolerates repeated insertion and removal without loss of elasticity, while the plastic Secchi disc resists discoloration and deformation caused by exposure to chemicals or UV light. Users can confidently employ the stopper in outdoor conditions, such as river sampling or lake assessments, where durability and ease of handling are critical. The product’s compatibility with standard 2‑inch tubes eliminates the need for additional adapters, streamlining workflow and reducing setup time.
Why Choose Us
Choosing the EISCO Turbidity Tube Stopper with Secchi Disc means selecting a component that combines engineering precision with practical convenience. EISCO’s long‑standing reputation for manufacturing reliable scientific equipment ensures that each stopper undergoes rigorous testing for dimensional accuracy, material integrity, and performance consistency. The integrated Secchi disc eliminates the need for separate visual aids, reducing inventory complexity and saving valuable bench space. Our product is backed by a comprehensive warranty and responsive technical support, providing users with confidence and assistance throughout the product lifecycle. Additionally, the stopper’s design incorporates a screw‑post mechanism that securely fastens the disc to the rubber base, preventing accidental detachment during vigorous shaking or transport. This attention to detail reflects EISCO’s commitment to delivering solutions that meet the exacting standards of professional laboratories and field technicians alike. By investing in this replacement stopper, customers benefit from reduced downtime, enhanced measurement accuracy, and a cost‑effective alternative to proprietary OEM parts.
Key Features
- Heavy‑duty rubber seal ensures leak‑free sample containment for accurate results
- Water‑resistant plastic Secchi disc provides a clear visual reference for turbidity assessment
- Universal fit for all 2‑inch EISCO turbidity tubes in the PH1120148 series
- Durable construction resists chemical exposure, UV light, and repeated handling
- Responsive customer support and warranty coverage for peace of mind
FAQ
What tube models are compatible with this stopper?
The stopper is compatible with any 2‑inch diameter EISCO turbidity tube that carries the PH1120148 part number series, covering both standard and specialized laboratory tubes.
Can the Secchi disc be replaced if it becomes damaged?
Yes, the Secchi disc is attached via a screw‑post that allows easy removal and replacement with a new disc, ensuring continued functionality without replacing the entire stopper.
Is the rubber material safe for use with chemical samples?
The rubber is formulated to be chemically inert for typical water quality testing reagents, providing a non‑reactive barrier that does not interfere with sample integrity.
How does the stopper perform in extreme temperatures?
Both the rubber seal and plastic disc are engineered to maintain their shape and sealing properties across a broad temperature range, from near‑freezing to elevated laboratory conditions.
What warranty does EISCO offer for this product?
EISCO provides a one‑year limited warranty covering manufacturing defects, backed by a dedicated technical support team ready to assist with any installation or performance questions.






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