Description
The “pH Chart (70x100cm)” is a large, educational wall chart that visually explains the pH scale, showing the acidity or alkalinity of common substances and providing essential reference material for science classrooms and laboratories.
Physical Specifications
Size: 70 × 100 cm, providing high visibility across classrooms or lab spaces.
Material: Multicolour printing on durable synthetic or polyart paper (often 80 GSM map litho), sometimes thermally laminated with 30-micron polyester film for longevity and easy cleaning.
Mounting: Some posters have top and bottom rollers or hanging strings for convenient display; others include double-sided tape for wall attachment.
Content and Educational Features
The chart illustrates the complete pH scale from 0 (most acidic) to 14 (most alkaline), clearly marking the neutral point at 7.
Standard colors represent different pH values based on universal indicators: red for strong acids, green for neutral, and purple for strong bases.
Everyday substances are listed at their corresponding pH values:
Acids: battery acid (0), lemon juice (2), vinegar (3), orange juice (4), black coffee (5).
Neutral: pure water (7).
Bases: baking soda (9), ammonia (11), bleach (13).
Some charts include safety advice and the importance of pH in environmental and biological contexts.
Uses in Education and Laboratory
Designed as a quick reference while conducting experiments involving acids, bases, indicators, or titrations.
Supports lessons in chemistry, environmental science, biology, and food science—helping students link theoretical concepts to real-world examples.
The large size and vivid colors ensure visibility, aiding understanding even from a distance or in group settings.
This pH chart is essential for making scientific concepts tangible, reinforcing safe laboratory conduct, and fostering comprehension of acids, bases, and chemical reactions in the learning environment.