Globe Scientific

Globe Scientific Diamond SureFlow Bottle Top Dispenser - GBTD Series | Standard Model, Autoclavable

$270.00

~~$337.50~~ $270.00

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Volume Range 0.25 – 2.5 mL 0.5 – 5 mL 1 – 10 mL 2.5 – 25 mL 2.5 – 30 mL 5 – 50 mL 5 – 60 mL 10 – 100 mL

Quantity

Wasting expensive reagents every time you prime a dispenser adds up fast — especially when your lab runs through dozens of bottles a week. The Globe Scientific Diamond SureFlow Standard Bottle Top Dispenser (GBTD Series) eliminates that frustration with a precision-engineered piston and springless valve system that delivers accurate, repeatable volumes from 0.25 mL all the way up to 100 mL depending on the model you select. Unlike conventional dispensers that rely on metal springs prone to corrosion and fatigue, the SureFlow's springless valve design provides superior chemical resistance and long-term reliability when dispensing acids, bases, solvents, and other aggressive laboratory reagents. Every unit ships with four bottle thread adapters (28 mm, 33 mm, 36 mm, and 38 mm), a telescopic fill tube adjustable for bottles ranging from 170 mm to 300 mm in height, and dual graduations for quick visual volume confirmation. The volume lock feature prevents accidental changes to your set dispensing volume, and the full 360° rotation lets you dispense into multiple vessels without repositioning the bottle. Fully autoclavable at 121 °C for complete decontamination between reagent changes.

Features and Benefits

Springless Valve Design: Eliminates the metal spring found in conventional dispensers, reducing maintenance requirements and providing enhanced chemical resistance to aggressive reagents including concentrated acids, bases, and organic solvents.
Unique Piston for Calibration Stability: The piston can be removed for cleaning and servicing without disturbing the calibration setting, so you spend time on science instead of recalibrating after every maintenance cycle.
Fully Autoclavable at 121 °C: The entire dispenser assembly can be autoclaved for thorough decontamination, critical when switching between incompatible reagents or working in sterile environments.
Volume Lock Mechanism: A dedicated locking feature secures the dispensing volume at your chosen setting, preventing accidental bumps from altering your measurement mid-experiment.
360° Rotation: The dispensing head rotates a full 360 degrees, allowing you to dispense into multiple vessels arranged around the bottle without lifting or moving the reagent container.
Dual Graduations: Two graduation scales printed on the dispensing cylinder let you read volume from either side, reducing parallax error and speeding up visual confirmation during repetitive dispensing tasks.
Four Thread Adapters Included: Ships with 28 mm, 33 mm, 36 mm, and 38 mm adapters to fit most standard laboratory reagent bottles. Additional 40 mm and 45 mm adapters are available separately.
2-Year Warranty: Backed by a two-year manufacturer warranty from Globe Scientific, giving you confidence in long-term durability and performance.

Specifications

Property	Value
SKU Range	GBTD-2.5, GBTD-05, GBTD-10, GBTD-25, GBTD-30, GBTD-50, GBTD-60, GBTD-100
Brand	Globe Scientific
Product Line	Diamond® SureFlow™
Model Type	Standard (non-recirculating)
Volume Ranges Available	0.25–2.5 mL, 0.5–5 mL, 1–10 mL, 2.5–25 mL, 2.5–30 mL, 5–50 mL, 5–60 mL, 10–100 mL
Graduation Increments	0.05 mL (2.5 mL), 0.1 mL (5 mL), 0.2 mL (10 mL), 0.5 mL (25/30 mL), 1.0 mL (50/60 mL), 2.0 mL (100 mL)
Valve Type	Springless
Autoclavable	Yes (121 °C)
Included Thread Adapters	28 mm, 33 mm, 36 mm, 38 mm
Fill Tube	Telescopic, adjustable for bottles 170–300 mm tall
Sterility	Non-Sterile
Unit of Measure	Each (EA)
Warranty	2 Years
Country of Origin	India

Laboratory Applications

Repetitive dispensing of buffer solutions, culture media, and staining reagents in histology and microbiology laboratories where consistent volumes across multiple vessels reduce variability between preparations
Dispensing concentrated acids and bases (HCl, NaOH, H₂SO₄) from stock bottles in analytical chemistry labs, where the springless valve's chemical resistance prevents corrosion-related failures
Quality control and pharmaceutical compounding workflows requiring precise, lockable volumes and full autoclave sterilization between different reagent batches
Educational and teaching laboratories where the ergonomic single-hand operation and volume lock prevent students from accidentally changing dispense settings
Environmental testing labs dispensing fixatives, preservatives, and extraction solvents from large-format bottles into sample containers for field collection kits

Frequently Asked Questions

Is the Globe Scientific Diamond SureFlow bottle top dispenser autoclavable?
Yes. The entire dispenser assembly — including the piston, valve, and dispensing cylinder — can be autoclaved at 121 °C (250 °F) for 20 minutes. This makes it suitable for decontamination when switching between reagents or when working in environments that require sterile dispensing equipment.

What bottle thread sizes does the GBTD standard dispenser fit?
Each unit ships with four thread adapters: 28 mm, 33 mm, 36 mm, and 38 mm. These cover most standard laboratory reagent bottles from manufacturers like Fisher, Sigma-Aldrich, and VWR. Globe Scientific also sells 40 mm and 45 mm adapters separately (SKUs GBTD-ADP-40 and GBTD-ADP-45) for larger-neck bottles.

What is the difference between the Standard and Recirculation models?
Standard models (GBTD Series) dispense in one direction — reagent flows from the bottle through the dispenser and out the discharge tube. Recirculation models (GBTD-R Series) add a return path so that reagent used during priming flows back into the bottle instead of being wasted. Choose the recirculation model when working with expensive or limited-supply reagents where every drop matters.

Can I clean and service the piston without losing calibration?
Yes. The Diamond SureFlow uses a unique piston design that allows you to remove, clean, and reinstall the piston without affecting the calibration. For recalibration when needed, a single-tool adjustment is all that's required — and Globe Scientific sells a dedicated calibration tool (SKU GBTD-CALTOOL) for this purpose.

What chemicals are compatible with the Diamond SureFlow dispenser?
The springless valve and chemically resistant wetted parts make the SureFlow compatible with a broad range of laboratory reagents including dilute and concentrated acids, bases, alcohols, and many organic solvents. For highly aggressive chemicals like hydrofluoric acid (HF) or fuming nitric acid, always consult the Globe Scientific chemical compatibility guide or contact their technical support team before use.

Quality Assurance

Globe Scientific products are manufactured under strict ISO 9001:2015 certified quality systems. Designed to meet the demanding requirements of clinical and research laboratories, these products undergo rigorous inspection to ensure consistent performance and reliability.