Our Unique D1–D8 Grading System
At SRBio, we do not simply sell “matcha powder.” We classify every batch of matcha using a strict D1–D8 internal quality standard based on three core sensory indicators:
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Color – brightness, evenness, and shade of green
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Taste – umami, astringency, bitterness, and aftertaste
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Aroma – fresh seaweed-like (覆香) notes, grassy or nutty tones
The higher the D number, the higher the quality.
| Grade Range | Type | Quality Level | Recommended Application |
|---|---|---|---|
| D1 – D5 | Standard matcha | Good daily grade | Ordinary food & beverage products (baked goods, smoothies, flavored milk, ice cream, confectionery) |
| D6 – D8 | Ritual / Ceremonial matcha | Premium high-end grade | Direct drinking, traditional tea ceremony, luxury desserts, ultra-premium functional foods |
This clear D1–D8 ladder helps our B2B customers easily choose the right matcha for their product positioning and cost targets — without overpaying for unnecessary high grades or compromising on sensory performance.
Product Overview
SRBio Matcha Powder is produced in strict accordance with Chinese national standard *GB/T 34778-2017*: shade-grown tea leaves (Camellia sinensis) → steam (or hot air) fixation → drying → stone grinding into microfine powder.
Our matcha retains “Three Origins & Three Clarities” — original color, original flavor, original texture, with a clean, refreshing taste and a faint grassy note.
Highlights:
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High nutrient bioavailability (chlorophyll, dietary fiber, fat-soluble catechins, organic calcium, vitamins)
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Ultra-fine particle size (from 800 mesh to >3000 mesh across D1–D8)
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Distinctive umami and seaweed-like aroma
Why D1–D8 Grading Matters for Your Business
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Precise ingredient selection – no more guessing between “food grade” and “ceremonial grade”
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Consistent quality across batches – each D level is linked to measurable parameters: L-theanine, caffeine, catechin, chlorophyll, and sensory panel scores
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Cost-efficient formulation – use D1–D5 for high-volume everyday products; reserve D6–D8 for premium lines and higher margins
Detailed D1–D8 Matcha Specifications
| Grade | Typical Mesh (μm equivalent) | L-Theanine (approx.) | Key Characteristics | Best For |
|---|---|---|---|---|
| D1 | ~800 mesh | ≥0.5% | Machine-picked, balanced green color, mild aroma | Mass-market baked goods, cheap饮品 |
| D2 | ~800–900 mesh | ≥0.6% | Stable color, slight umami | Ice cream, syrups, seasonings |
| D3 | ~900–1000 mesh | ≥0.7% | Cleaner taste, less bitterness | Instant matcha lattes (economy range) |
| D4 | ~1000 mesh | ≥0.8% | Hand-picked blend, good greenness | Mid-tier beverages, protein shakes |
| D5 | ~1000–1200 mesh | ≥0.9% | Stronger umami, low astringency | Premium smoothies, matcha-flavored chocolates |
| D6 (Ritual entry) | ~2000 mesh | ≥1.2% | Hand-picked first flush, bright jade color, rich seaweed aroma | High-end lattes, direct drinking (entry ceremonial) |
| D7 (Ritual premium) | ~2000–2500 mesh | ≥1.4% | Deep umami, natural sweetness, lingering finish | Luxury patisserie, matcha-focused tea bars |
| D8 (Ritual master) | 2500–3000+ mesh | ≥1.6% | Only first-harvest spring leaves, hand-picked, vibrant emerald, creamy mouthfeel | Traditional tea ceremony, ultra-premium packaged matcha, Michelin-star desserts |
Note: Exact parameters can be customized via OEM/ODM.
Nutritional & Functional Value (All D1–D8 grades retain full matcha nutrition)
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L-Theanine – promotes calm focus (1–4% of dry matter)
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Catechins (EGCG) – 12–24% of dry matter, strong antioxidant and anti-inflammatory
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Caffeine – 2–5%, sustained energy
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Chlorophyll – 5–6× higher than ordinary green tea, supports detox
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Minerals – K, Ca, Mg, Fe, Na, Zn, Se, F
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Vitamins – C, A, B1, B2, B3, B5, B6, E, K, H
Even D1–D5 grades offer superior nutrition compared to most standard green tea powders — because every SRBio matcha is made from real shade-grown tea, not green tea powder.
Quality Control Across All D1–D8 Grades
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Cultivar: Yabukita (Japan-origin, clonal propagation, high amino acid, low caffeine/catechin)
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Growing region: Guizhou, high altitude, acidic soil (pH 4.5–6.5), no herbicides/pesticides
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Shading: 20–30 days before harvest → boosts chlorophyll & L-theanine
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Harvest:
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D1–D5: machine-picked or blend
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D6–D8: hand-picked, first flush, once per year
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Processing:
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Steam fixation (15 sec) → rapid drying → de-stemming & de-veining → natural stone grinding
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Stone mills produce only ~1 kg/day per mill → unique torn-flake microstructure
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Testing:
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Every batch tested by Eurofins or SGS
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200+ pesticide residues, heavy metals, microbiology (<10,000 CFU/g)
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Certifications: KOSHER, HALAL, ISO9001
Product Applications by D Grade
D1 – D5 (Standard, everyday use)
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Mass-market bakery (cookies, cakes, bread)
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Dairy & plant-based drinks (matcha milk, yogurt, smoothies)
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Confectionery (hard candies, marshmallows, chocolate)
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Instant matcha powders (economy to mid-tier)
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Ice cream & sorbets
D6 – D8 (Ritual / premium)
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Traditional tea ceremony (usucha, koicha)
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Luxury hotels & tea houses
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Premium packaged retail matcha (direct drinking)
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High-end desserts (ganache, panna cotta, artisanal chocolates)
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Functional superfood blends (premium segment)
Packaging & OEM Services
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Standard bulk: 25 kg/carton, inner aluminum foil bag + outer carton – use within 3 months after opening
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Private label / OEM:
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Cans, pouches, sachets, stick packs, bottles
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Custom mesh, custom D-grade blends, co-branding
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Storage: Cool, dry, away from light; refrigeration recommended for D6–D8
After-Sales Service
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Damaged packaging → immediate replacement
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Flexible courier options available
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Within 30 days: if a third-party lab report proves quality non-conformance, we accept return and cover all losses (including test fees)
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Third-party test report provided upon request
Why Partner with SRBio?
We are one of the few matcha suppliers that openly uses a quantitative D1–D8 grading system based on color, taste, and aroma. This removes ambiguity and helps you:
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Scale from affordable everyday matcha (D1–D5) to prestigious ultra-premium lines (D6–D8)
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Maintain batch-to-batch consistency for your brand
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Get technical support, custom blends, and fast documentation (COA, MSDS, nutritional panel, organic eligibility)
Contact SRBio
Request samples, technical datasheets, or a D-grade matching consultation for your product line.
SRBio – From D1 to D8, we speak matcha quality in your language.
Let me know if you would like the D1–D8 grading table simplified further or converted into a downloadable specification sheet (PDF format).
Shipping & Packing Information
OEM SERVICE
We offer all-inclusive product development from consultation to delivery.
We make product proposals based on the customer’s requirements, from small to large lots.
