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6 Dustless Chalk For School Blackboard: White, 3 Colors, Red, Yellow, Blue, Green, Brown, Purple, 6 Multicolor, Dark Red, Gray, Direct From Japan
Six sticks of Japanese scallop-shell Dustless Chalk, smooth and low dust. From Japan.
₱200.00
🚚 Free shipping over ₱3,000 · Standard shipping ₱499
- From JapanJP-Direct
- AuthenticVerified
- 10–14 daysDelivery
Rikagaku Dustless Chalk — scallop-shell chalk that writes smoothly and keeps its dust down.
About this product
Dustless Chalk is the flagship of Nihon Rikagaku Industry, a Japanese maker long recognized for employing people with disabilities across its workforce. The chalk is calcium carbonate based and, since a 2005 reformulation, every stick contains fine powder milled from recycled scallop shells, a byproduct that would otherwise be discarded. Grinding the shell down to around five microns made the sticks stronger against snapping and smoother on the board; because the resulting particles are heavier, dust falls rather than drifting, so it settles less on clothes and shelves than ordinary chalk. It writes densely on green and black classroom boards and erases cleanly with a standard felt eraser. This blackboard grade is sold in 6-stick boxes across a wide color range: plain white, yellow, a 3-color assortment, a 6-color multicolor box of red, yellow, green, brown, blue and purple, plus dark red and gray. Suited to classrooms, tutoring centers, cafe menu boards and home study walls. Color and set contents vary by box. Made in Japan by Nihon Rikagaku Industry.
How to use
- Hold the stick at a low angle to the board for a broad, solid line, or use the end for fine writing.
- Keep the writing end squared off by rotating the stick as you write instead of always using one edge.
- Erase with a dry felt blackboard eraser; wipe the board with a damp cloth afterwards only if a ghost line remains.
- Store the box closed and away from damp, since chalk absorbs moisture and gets crumbly in humid rooms.
- Tap the eraser out over a bin regularly so old dust does not smear the next line.
FAQ
What is it made of?
Calcium carbonate with fine recycled scallop shell powder, milled to around five microns. Calcium carbonate is the same base material used in products such as toothpaste.
Is it really dustless?
The particles are heavier than in ordinary chalk, so the dust drops rather than floating and settles less on clothing and furniture. It is low dust, not zero dust.
How many sticks per box?
Six sticks per box in this blackboard grade.
Which colors can I get?
White, yellow, dark red and gray as single-color boxes, plus a 3-color assortment and a 6-color multicolor box with red, yellow, green, brown, blue and purple.
Does it erase cleanly?
Yes, with a normal dry felt blackboard eraser. A damp cloth removes any remaining ghosting.
🇵🇭 For Philippines customers
Philippine classrooms, review centers and barangay halls still run on chalkboards, and teachers who write on a board all day feel the difference between chalk that showers dust over the front row and chalk that does not. Humidity is the other issue: cheap chalk softens and crumbles, while a denser stick holds up better in a closed box.
Use it for classroom lessons, tutorial sessions, cafe and canteen menu boards or a kitchen wall planner; boxes hold six sticks and come in white, yellow, dark red, gray, a 3-color assortment and a 6-color multicolor pack of red, yellow, green, brown, blue and purple, so you can color-code a timetable.
Authentic, shipped direct from Japan — delivery 10–14 days, free over ₱3,000.
Rikagaku 6 Dustless Chalk For School Blackboard: White, 3 Colors, Red, Yellow, Blue, Green, Brown, Purple, 6 Multicolor, Dark Red, Gray, Direct From Japan
₱200.00