Fluorescent Highlighters

Soni OfficeMate Fluorescent Highlighters | Chisel Tip Quick-Drying Highlighters | Water Based Ink & Eco-Friendly | Vibrant fluorescent colours | Pack of 4, 5 & 6 | Non-Toxic, Long-Lasting Writing Length | Suitable for Paper, Copies and Faxes (thermal paper) etc.

Technical Specification:

  • Ink Composition: Water-based, non-toxic Fluorescent vibrant ink with controlled viscosity for smooth discharge.
  • Tip Type: Precision-molded chisel tip with 1 mm (fine) and 4 mm (broad) marking capability.
  • Writing Length: Up to 350 meters of continuous marking (approx. 3× standard highlighter output).
  • Drying Time: < 5 seconds on standard 80 gsm copier paper (ambient 25 °C, RH 60%).
  • Bleed Resistance: ≤ 1 mm edge spread on standard office paper; optimized for low penetration.
  • Barrel Material: High-impact polypropylene (PP) body with matching PP cap, ventilated for safety.
  • Cap-Off Time: Maintains performance up to 24 hours without cap under controlled lab conditions.
  • Shelf Life: 24 months from manufacturing date under sealed storage (temperature 5 °C–35 °C).
  • Compliance: Conforms to ASTM D-4236, EN 71-3, and RoHS safety standards.
  • Available Sets: 4 pc (Pink, Orange, Green, Yellow) / 5 pc (+ Blue) / 6 pc (+ Red).

Key Features:

  • Precision ink-feed system ensures consistent ink discharge without flooding or skipping, maintaining smooth and uniform marking on all paper types.
  • Optimized solvent balance enables fast drying, reducing smudge and transfer on printed or handwritten text.
  • Lightfast vibrant pigments retain true color under light and air exposure, preventing fading or discoloration.
  • Durable polyester chisel tip maintains edge accuracy and shape even after extensive use on coarse or porous surfaces.
  • Capillary-based ink reservoir ensures complete utilization with minimal residue and steady flow until depletion.
  • Precisely engineered body – approx. 142 mm length, 11 mm diameter, and 4 mm tip projection – ensuring consistent size and compatibility.
  • Balanced pen structure offers stable grip and reduces fatigue during long writing or highlighting sessions.
  • Free from xylene, toluene, and heavy-metal pigments; compliant with environmental and safety regulations.
  • Performs efficiently on standard, recycled, and thin papers (≥ 60 gsm) with minimal bleed-through.
  • Available in sealed 4 pc, 5 pc, and 6 pc sets with labeled, lot-coded blister or box packaging for secure handling and traceability.

Physical Properties :

1. Barrel: Material -Polypropylene (PP)

  • Properties: High-impact strength, chemical resistance, and low moisture permeability.
  • Function: Provides a durable outer casing that protects the ink reservoir and maintains structural integrity during use.

2. Cap: Material - Polypropylene (PP)

  • Design: Ventilated safety cap with snap-fit locking mechanism.
  • Function: Prevents ink evaporation, ensures airtight sealing, and allows safe handling compliant with EN71 standards.

3. Tip (Nib): Material - Polyester fiber (synthetic felt)

  • Dimensions: 4.6 mm chisel design for 1 mm, 2 mm, and 5 mm marking widths.
  • Function: Provides precision marking and consistent ink flow with controlled absorbency and shape retention.

4. Ink Reservoir: Material - Polyethylene fiber or polyester-based capillary reservoir.

  • Function: Holds and regulates ink flow through capillary action, ensuring consistent discharge until depletion.

5. Ink Composition: Base: Water-based vibrant pigment ink.

  • Components: Water, dyes/pigments, humectants, surfactants, and preservatives.
  • Properties: Non-toxic, quick-drying, smudge-proof, and low odor.
  • Compliance: Conforms to ASTM D-4236, EN71-3, and REACH safety standards.

6. End Plug (Tail Cap): Material - Polypropylene (PP)

  • Function: Seals the rear of the barrel, prevents leakage, and provides balance to the marker structure.

7. Label/Printing: Process: Hot stamping or screen printing using non-toxic metallic ink.

  • Material: Gold or silver ink layer resistant to wear and solvent contact.
  • Function: Displays brand name, model, and regulatory markings.

8. Packaging Components: Options: PP pouch or paper display box (4 / 5 / 6 / 10 / 48 pcs).

  • Material: Recyclable polypropylene or eco-friendly coated paperboard.
  • Certifications: Recyclable and compliant with cardboard packaging standards.

Component & Materials :

Nibs : Polyester (PE) / Acrylic

Filters : Polyester with polypropylene wrapping

Barrels : Polypropylene (PP)

Caps : Polypropylene co-polymer (PPCO)

Nozzle & Plugs : Polypropylene

Shelf Life and Storage Instructions :

Shelf Life :

2 years from the date of manufacture (when unopened and stored properly)

Storage Instructions :

  • Store in a cool, dry and well-ventilated area.
  • Keep ink containers tightly sealed when not in use to prevent evaporation.
  • Avoid direct sunlight, open flames and sources of heat Do not freeze. If freezed, for best result allow ink to come on room temp before use.
  • Keep away from children and unauthorized users.
  • Shake well before use.
  • Store at room temperature (ideally 15-30°C) for best results.

FAQs:

Q 1. Can the highlighters be used on glossy or coated paper?

A. Yes, you can use our highlighters on coated or glossy paper without them smudging. They work well with photographs, textbooks, and other glossy materials because of their fast-drying, smear-resistant ink formula, which prevents smudging of coated magazine pages or inkjet prints

Q 2. Are the highlighters non-toxic and safe for children to use?

A. Yes, you can use our highlighters at home or at school because they are safe and non-toxic. They are manufactured using kid-safe ink that complies with ASTM D-4236 and EN-71 safety regulations. This implies that older kids can use them worry-free as long as they are watched. (As with any small item, we do not advise children under the age of three to use them because of small parts like caps.)

Q 3. Can the highlighters be used on thin paper without bleeding through?

A. Indeed, the formulation of these highlighters is specifically designed to reduce bleed-through on thin paper. As long as you don't press too hard or oversaturate one area, the ink lays down smoothly and transparently, so even on notebook or bible pages, there will be little to no show-through.

Q 4. Are the highlighters fluorescent or pastel?

A. We have options for both pastel and fluorescent colours. Six bright fluorescent colours (for that bright neon look) and six gentle pastel colours are included in our standard set. Regardless of your preference for soft pastel hues or striking neon highlights, you can select the Soni Officemate highlighter pack that best fits your look.

Q 5. Can the highlighters be used for both writing and highlighting?

A. Our highlighters are indeed multipurpose. Both highlighting and underlining or writing are possible with the chisel tip design. The pointed end of the tip can be used to precisely write notes or underline, while the broad side can be used to highlight text. Because of this, they can be used for annotations in addition to highlighting.

Q 6. What type of tip do these highlighters have?

A chisel tip is a feature of our highlighters. Because this tip shape is narrow on one side and broad on the other, you can write thin lines for underlining or create wide highlights across text. Even after repeated use, the chisel tip maintains its shape because it glides smoothly and is long-lasting.