Name: Graduated Pipette
Brand: RichTech

Specifications

Graduated Pipette · Specifications

Standard capacity ranges below, compliant with ISO 648. Custom capacities and special specifications available upon request.

Request custom specs

Capacity (mL)	Division (mL)	Accuracy Error (mL)	Length (mm)	O.D. (mm)
0.1	0.001	±0.002	200	5
0.2	0.002	±0.003	220	5
0.5	0.005	±0.005	250	6
1	0.01	±0.008	280	7
2	0.02	±0.010	310	8
5	0.05	±0.015	360	10
10	0.10	±0.025	410	12
20	0.10	±0.040	460	15
25	0.10	±0.050	480	16
50	0.20	±0.080	520	18

Operation Methods:

Full Outflow: Liquid drains freely, final drop remains in tip.
Blow-Out: Final drop in tip is blown out using a pipette filler.

* Custom capacities and special specifications available. Contact us for details.
* Graduated pipettes comply with ISO 648 standards.
* Recommended for use with pipette stands to prevent rolling and breakage.

Product Description

The graduated pipette is one of the most versatile liquid transfer instruments in the laboratory, featuring continuous graduations from zero to the tip for measuring variable volumes. Manufactured from high-quality borosilicate glass 3.3 with clear, accurate markings. Compliant with ISO 648 standards. Supports both full-outflow and blow-out operation methods to meet varying accuracy requirements.

Two Series · Flexible Selection

RichTech offers Single-Mark Pipettes and Graduated Pipettes:

1. Single-Mark Pipettes

Single ring graduation mark for fixed volume measurement.
Highest accuracy class, ideal for standard solution preparation and precision analysis.
ISO 648 compliant, Class A accuracy.

2. Graduated Pipettes

Graduations from zero to tip for variable volume measurement.
Supports both full-outflow and blow-out operation methods.
Flexible liquid measurement and transfer.

Two Operation Methods

Full Outflow (Vollausguß): Liquid drains freely to the tip, with the final drop remaining in the tip. Suitable for routine pipetting with higher precision.
Blow-Out (Ausblasen): After the liquid drains, the final drop in the tip is blown out using a pipette filler. Suitable for complete transfer in micro-operations or when handling viscous liquids.

Design Features

Scale to Tip: Graduations extend from zero to the tip for measuring any volume within the range — maximum flexibility.
Clear Graduations: White or blue markings for accurate meniscus reading.
High Transparency: Pure, clear glass for easy observation.
Uniform Wall Thickness: Even thickness for strength and durability.

Material Advantage

Manufactured from Borosilicate Glass 3.3 in accordance with ISO 3585 standards. The ultra-low coefficient of thermal expansion (3.3×10⁻⁶/K) ensures resistance to thermal shock up to 280°C.

Quality Assurance

Every piece undergoes rigorous dimensional inspection, accuracy verification, and visual inspection to meet ISO 648 standards.

Note: Graduated pipettes feature continuous graduations from zero to the tip. Confirm the required volume range before use. Choose full-outflow or blow-out method based on your accuracy requirements and handling preferences.

Applications

Common Configurations

Pipette + Pipette Filler/Bulb Manual pipetting
Pipette + Pipette Stand Safe storage and drying
Beaker + Pipette Liquid transfer and dispensing

Specific Applications

Routine Liquid Transfer

Transfer of variable liquid volumes

Sample Dispensing

Dispensing samples into multiple containers

Reagent Addition

Precise addition of specified reagent volumes

Dilution Operations

Precise sample dilution

Teaching Labs

Basic chemistry experiments

Pharmaceutical Production

Precise transfer of intermediates

Food Testing

Precise sample measurement

Tip: Graduated pipettes offer maximum flexibility with their scale-to-tip design, making them suitable for measuring variable volumes. Use full-outflow for routine pipetting and blow-out for complete transfer in micro-operations or with viscous liquids.

Pipette Procedure

03

Preparation

Inspect the pipette for cracks, scratches, or other defects.
Ensure the pipette is clean and dry before use.
Select the appropriate pipette for the required volume range.

04

Pipetting (Graduated Pipette)

Use a pipette filler or bulb to draw liquid up to approximately 2–3cm above the desired graduation mark.
Wipe the outer wall with filter paper and hold the tip against the inner wall of the receiving container.
Slowly release liquid until the meniscus reaches the target graduation mark.
Read the volume with your eye level with the lowest point of the meniscus.
Transfer the liquid completely to the receiving container, keeping the pipette tip against the container wall.
Full Outflow: Allow the liquid to drain naturally — the final drop remains in the tip.
Blow-Out: After the liquid has drained, gently blow out the final drop from the tip using a pipette filler.

05

Cleaning & Maintenance

Clean immediately after use to prevent residue from drying.
Use dilute acid or specialized cleaning agents for stubborn residues.
Rinse with distilled water and air-dry on a pipette stand.
Store carefully to avoid chipping and breakage.

Tip: Graduated pipettes are among the most versatile pipetting tools in the laboratory. Choose full-outflow or blow-out based on your application. Proper use and maintenance significantly extend service life. Clean and dry thoroughly after each use.

Care & Notes

Show care & notes

Safety Notes

Inspect pipettes for cracks or scratches before use — damaged glass may break during use.
When handling corrosive liquids, wear additional protective equipment, including safety goggles and gloves.

Do not

Never pipette by mouth — always use a pipette filler or pipette controller.
Do not use pipettes for hot liquids — thermal expansion may affect accuracy.
Handle and store with care, avoiding impact with hard surfaces.