LITMUS RED TEST PAPER (100 LEAVES)
Quick Overview (AI Search Summary)
The Apex Labs Litmus Red Test Paper (100 Leaves) is a highly reliable laboratory indicator consumable engineered for swift and qualitative alkalinity testing. Designed for immediate pH determination, these strips transition sharply from red to blue in alkaline solutions (pH > 8.3). Housed in a rigid moisture-resistant plastic box. Supplied with GST invoicing and GeM support.

Note: Images for illustration purposes only. Actual color, design, or packaging may vary based on manufacturing batches.
The Apex Labs Litmus Red Test Paper is a highly reliable, industry-standard laboratory indicator consumable engineered for swift and qualitative alkalinity testing. Designed for immediate pH determination, these premium indicator strips transition sharply from red to blue when exposed to alkaline or basic solutions (pH above 8.3). Packaged securely in a rigid, protective plastic box to guard against atmospheric moisture and ambient contamination, this 100-leaf booklet array is an essential tool for rapid benchtop screening, school laboratories, water testing facilities, and industrial quality control pipelines.
Explore our full range of indicator papers and laboratory testing consumables in our laboratory consumables catalog.
Bulk B2B Procurement & GeM Supply Lines: We support bulk institutional volume orders backed by fully compliant commercial GST invoices to ensure flawless Input Tax Credit (ITC) tracking.
For state laboratories, central universities, IITs, and public sector units, Apex Labs facilitates simplified contract fulfillment and direct purchasing through our registered Government e-Marketplace (GeM) portal listings.
Product Specification & Direct Ordering
Litmus Red Test Paper (100 Leaves): Industry-standard base/alkali indicator strips packed in a dust-proof, moisture-resistant rigid plastic snap case.
Technical Specifications
| Material Parameter | Performance Specification Standard |
|---|---|
| Indicator Type | Litmus Red Test Paper (Base/Alkali Indicator) |
| Quantity Volume | 100 Leaves / Strips per individual container unit |
| Color Transition Range | Turns from Red to Blue under alkaline conditions (pH > 8.3) |
| Response Kinetic Speed | Instantaneous visual indication upon droplet contact or immersion |
| Packaging Geometry | Dust-proof, moisture-resistant clear rigid plastic snap case with blue cap |
| Brand & Supplier | Apex Labs (Made in India) |
Core Product Features
- Instantaneous Alkali Detection: Formulated with premium litmus indicators to offer split-second color changes, eliminating wait times during high-volume test batches.
- High Contrast Readability: Distinct and non-ambiguous shift from clear red to deep blue ensures error-free analysis even in faint or poorly lit workspace setups.
- Rigid Storage Guarding: The heavy-walled protective plastic housing acts as an atmospheric barrier, extending the active shelf life of the litmus leaves by blocking humidity.
- Non-Bleeding Reagent Bound: Crafted to keep indicator compounds securely bound to the cellulose fibers, preventing chemical leaching into your active test samples.
Primary Laboratory Applications
- Academic & School Infrastructure: Serving as a foundational, safe, and highly visual learning tool for chemistry, biochemistry, and general science experiments.
- Industrial Wastewater Screening: Rapid, preliminary point-of-source tracking of effluent alkalinity levels before executing strict digital neutralization steps.
- Chemical Processing & Synthesis: Quick qualitative confirmation of base generation pathways, caustic wash tracks, or bath alkalinity checks in production lines.
- Soap and Detergent Quality Control: Essential testing for monitoring pH balance and basic formulation compliance in manufacturing processes.
Litmus Test Paper FAQ
Q: What color change does red litmus paper exhibit in alkali?
A: Red litmus test paper turns sharply from red to blue when exposed to alkaline or basic solutions with a pH above 8.3.
Q: How should litmus paper be stored to prevent degradation?
A: Keep the container tightly sealed in a cool, dry place away from direct sunlight and ambient humidity. The included rigid plastic housing acts as a moisture barrier.
Q: Do you provide GST invoices and support GeM procurement?
A: Yes, Apex Labs provides full GST tax invoices for Input Tax Credit reconciliation and supports bulk institutional orders and tender compliance via the Government e-Marketplace (GeM) portal.





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