{"id":2311,"date":"2026-10-25T14:11:15","date_gmt":"2026-10-25T07:11:15","guid":{"rendered":"https:\/\/vinhhiepgl.com\/vietnam-coffee-supplier-checklist-green-robusta\/"},"modified":"2026-10-25T22:31:17","modified_gmt":"2026-10-25T15:31:17","slug":"vietnam-coffee-supplier-checklist-green-robusta","status":"publish","type":"post","link":"https:\/\/vinhhiepgl.com\/en\/vietnam-coffee-supplier-checklist-green-robusta\/","title":{"rendered":"Clean vs Standard Vietnamese Robusta: Choosing a Grade for Roasting"},"content":{"rendered":"<div class=\"vh-story-article\" data-release=\"20261025\">\n<p>You have found two green coffees with the same screen designation, but one is called Clean and the other Standard. The useful comparison begins with the published conditions behind those names. In Vinh Hiep&#8217;s S16 range, the defect categories and foreign-matter limits differ, while the moisture maximum and screen minimum are the same. That gives a roaster a specific grade decision to examine before testing the coffee in a recipe.<\/p>\n<p>This <strong>Clean vs Standard Vietnamese Robusta<\/strong> guide compares Vinh Hiep&#8217;s named products. It does not define labels for every supplier or assign a flavour to either grade. You can <a href=\"https:\/\/vinhhiepgl.com\/en\/danh-muc-san-pham\/green-coffee-beans\/\">explore the green Robusta range<\/a> and select the line whose stated physical conditions fit the requirement you want to investigate. The sample trial then addresses whether that ingredient works in your finished product.<\/p>\n<nav aria-label=\"Article contents\" class=\"vh-story-toc\"><strong>In this article<\/strong><\/p>\n<ol>\n<li><a href=\"#vh-story-2311-1\">Keep the screen group fixed while examining the grade<\/a><\/li>\n<li><a href=\"#vh-story-2311-2\">The published S16 specifications<\/a><\/li>\n<li><a href=\"#vh-story-2311-3\">Separate limits and combined limits need different reading<\/a><\/li>\n<li><a href=\"#vh-story-2311-4\">Moisture and screen statements do not settle the grade choice<\/a><\/li>\n<li><a href=\"#vh-story-2311-5\">How the S18 lines fit the same question<\/a><\/li>\n<li><a href=\"#vh-story-2311-6\">A first trial when you are developing a new coffee<\/a><\/li>\n<li><a href=\"#vh-story-2311-7\">Relate the physical requirement to the actual offer<\/a><\/li>\n<li><a href=\"#vh-story-2311-8\">Choose the grade for a defined job<\/a><\/li>\n<li><a href=\"#vh-story-2311-9\">Sources<\/a><\/li>\n<\/ol>\n<\/nav>\n<h2 id=\"vh-story-2311-1\">Keep the screen group fixed while examining the grade<\/h2>\n<p>Comparisons are easier to interpret when they address one choice at a time. If the question is the difference between Clean and Standard, begin within the same screen group. That lets you concentrate on the published grade conditions rather than changing size classification at the same time.<\/p>\n<p>Vinh Hiep&#8217;s <a href=\"https:\/\/vinhhiepgl.com\/en\/san-pham\/robusta-grade-1-s16-clean\/\">S16 Clean<\/a> and <a href=\"https:\/\/vinhhiepgl.com\/en\/san-pham\/robusta-grade-1-s16-standard\/\">S16 Standard<\/a> provide that starting comparison. Both identify screen 16 with a minimum percentage. Their other physical limits need to be read separately and with the correct parameter names attached.<\/p>\n<p>This is a way of organising the purchasing decision. It does not imply that size and defects are the only differences between any two actual samples. The material offered, processing information and observed condition still matter. Keeping the catalogue comparison focused simply prevents several distinct questions from being hidden inside one grade label.<\/p>\n<p>For a roastery that already uses a defined physical specification, begin with that requirement. For a new product without a reference ingredient, choose a named candidate whose published conditions give you a clear basis for the first trial. Neither route requires treating the grade name as a complete assessment of the coffee.<\/p>\n<h2 id=\"vh-story-2311-2\">The published S16 specifications<\/h2>\n<figure class=\"vh-story-figure\"><img decoding=\"async\" alt=\"An English diagram showing screens, moisture measurement, defects and sample evaluation\" height=\"1024\" loading=\"lazy\" src=\"https:\/\/vinhhiepgl.com\/wp-content\/uploads\/2026\/10\/vinhhiep-en-specs-20261024.webp\" width=\"1536\" title=\"\"><figcaption>Illustration: Screen size, moisture and defect limits describe separate checks in a Robusta specification.<\/figcaption><\/figure>\n<p>The following table preserves how the two product pages state their conditions. A dash means that the page does not state that parameter in the same form; it is not a zero or an additional guarantee.<\/p>\n<div aria-label=\"Comparison table\" class=\"vh-story-table\" role=\"region\" tabindex=\"0\">\n<table>\n<thead>\n<tr>\n<th scope=\"col\">Published parameter<\/th>\n<th scope=\"col\">S16 Clean<\/th>\n<th scope=\"col\">S16 Standard<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Black beans<\/td>\n<td>0.1% maximum<\/td>\n<td>Included in combined category below<\/td>\n<\/tr>\n<tr>\n<td>Broken beans<\/td>\n<td>0.5% maximum<\/td>\n<td>Included in combined category below<\/td>\n<\/tr>\n<tr>\n<td>Black and broken, combined<\/td>\n<td>Not stated as one combined limit<\/td>\n<td>2% maximum<\/td>\n<\/tr>\n<tr>\n<td>Foreign matter<\/td>\n<td>0.1% maximum<\/td>\n<td>0.5% maximum<\/td>\n<\/tr>\n<tr>\n<td>Moisture<\/td>\n<td>12.5% maximum<\/td>\n<td>12.5% maximum<\/td>\n<\/tr>\n<tr>\n<td>Screen 16<\/td>\n<td>90% minimum<\/td>\n<td>90% minimum<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>The immediate decision is whether the proposed grade meets the physical conditions your operation needs. If you require separately stated limits for black and broken beans, the Clean page addresses those categories individually. The Standard page uses a combined category, so it should not be copied into your records as two separate 2% allowances.<\/p>\n<p>The foreign-matter limits also differ. Keep that difference visible when considering the input. Do not turn the figures into a claim that every sample will contain the stated maximum, or that the difference guarantees a particular change in taste. The table describes published product conditions, not measured results from two samples.<\/p>\n<h2 id=\"vh-story-2311-3\">Separate limits and combined limits need different reading<\/h2>\n<p>A combined category answers how two named groups are bounded together in the specification. Separate categories place individual limits on each group. They are different ways of expressing a requirement. Losing that distinction can make two offers appear directly interchangeable when they do not state the same conditions.<\/p>\n<p>For example, a buyer&#8217;s existing specification may name black beans and broken beans on separate lines. When reviewing S16 Standard, the buyer should retain its own requirement and clarify whether the proposed product can meet it. Replacing both lines with the published combined number would change the question being asked.<\/p>\n<p>For S16 Clean, retain the two published values as separate values. There is no need to invent a new combined grading rule to summarise the product. The safest working record is the one that preserves the conditions actually stated and identifies anything that still needs confirmation for the purchase.<\/p>\n<p>If this distinction affects the ingredient you can use, <a href=\"https:\/\/vinhhiepgl.com\/en\/contact-us\/\">discuss the required grade with Vinh Hiep<\/a>. The purpose is to establish whether the named line matches your physical requirement before investing more time in development. A sample can then be assessed with that requirement understood.<\/p>\n<h2 id=\"vh-story-2311-4\">Moisture and screen statements do not settle the grade choice<\/h2>\n<p>Both S16 pages publish the same moisture maximum and screen minimum. Those shared conditions help identify what stays the same in this catalogue comparison. They do not make the two complete product descriptions identical, because the defect and foreign-matter statements still differ.<\/p>\n<p>A moisture maximum is a limit for the described product, rather than a reading for every bag or sample. A minimum screen percentage is also a specification statement. Keep those qualifiers when making an internal purchasing note so the next person does not interpret the values as actual measurements.<\/p>\n<p>If a particular sample is assessed, identify the result as a result for that material. It can be compared with the relevant requirement, but it should not silently replace the published specification in all future discussions. Catalogue information and sample observations have related, distinct jobs.<\/p>\n<p>The <a href=\"https:\/\/vinhhiepgl.com\/en\/vietnamese-robusta-buyer-guide\/\">Vietnamese Robusta product-range guide<\/a> explains how screen names, grade names and other information fit together. Use it when the terminology is new. When choosing the grade, return to the condition that matters for your production and the candidate you intend to test.<\/p>\n<h2 id=\"vh-story-2311-5\">How the S18 lines fit the same question<\/h2>\n<p>Vinh Hiep also presents <a href=\"https:\/\/vinhhiepgl.com\/en\/san-pham\/robusta-grade-1-s18-clean\/\">S18 Clean<\/a> and <a href=\"https:\/\/vinhhiepgl.com\/en\/san-pham\/robusta-grade-1-s18-standard\/\">S18 Standard<\/a>. At the time of review, their published black, broken, combined-defect, foreign-matter and moisture conditions follow the same respective Clean and Standard pattern shown above, with screen 18 at 90% minimum instead of screen 16.<\/p>\n<p>This means a buyer can organise two different investigations: grade within a screen group, or screen group while considering the appropriate grade. Keeping the purpose clear helps you select samples deliberately. It avoids concluding that every difference in a trial must be caused by one word in the product name.<\/p>\n<p>There is no basis here to assign S18 to a more experienced roaster or to declare it inherently more suitable for espresso. A larger screen designation establishes a size-related distinction. Suitability for a recipe needs to be tested with the actual candidate and the roastery&#8217;s own development approach.<\/p>\n<p>If you want to investigate both grade and screen, plan the comparisons in stages. Complete the question that most affects your current ingredient requirement first. Then test the additional candidate for a stated reason. A smaller, interpretable series of trials can be more useful than a large tasting without clear decisions.<\/p>\n<h2 id=\"vh-story-2311-6\">A first trial when you are developing a new coffee<\/h2>\n<p>Choose the intended drink before selecting the candidate. For a new phin coffee, decide how it will be prepared and whether the target serving includes milk. For an espresso blend, identify the role you want the Robusta component to play and the drinks in which the blend must work.<\/p>\n<p>If separate physical defect limits help you define the input, S16 Clean is a possible starting line to discuss. That suggestion rests on the published specification, not on an assumed flavour. Confirm the candidate and sample arrangements, then evaluate the material under a recorded roast and preparation.<\/p>\n<p>Observe what the drink actually does. Describe the aroma, taste, texture and finish in words your team understands. Decide whether the candidate deserves further development and what the next trial should change. Do not borrow tasting notes from a product category to fill a gap in the observations.<\/p>\n<p>When a characteristic is unclear, repeat the relevant comparison rather than forcing a conclusion. A useful trial can end with a precise next question. It does not have to produce an immediate purchasing commitment, and it should not be treated as proof that an entire grade always tastes one way.<\/p>\n<h3>When an established recipe is the reference<\/h3>\n<p>Keep a sample of the existing ingredient and the current recipe available. State the features customers expect from the finished drink. Then evaluate the proposed grade in relation to that reference, retaining identifiable roast, blend and preparation conditions.<\/p>\n<p>If you change the ingredient and adjust the recipe, record which step belongs to comparison and which belongs to development. The first may show a difference; the second investigates whether that difference can be used successfully. Your decision concerns the product you sell, rather than an abstract winner between two labels.<\/p>\n<h2 id=\"vh-story-2311-7\">Relate the physical requirement to the actual offer<\/h2>\n<p>After testing, check that the proposed purchase still identifies the line you evaluated. A successful S16 Clean trial does not approve a later offer of S16 Standard merely because both names contain S16. Resolve a change in product before continuing with the purchase.<\/p>\n<p>Commercial comparison also needs the product attached. A price is not comparable in isolation if it refers to another grade, quantity basis or delivery arrangement. Keep the grade requirement visible while discussing the offer so a commercial adjustment does not quietly become a change in the ingredient.<\/p>\n<p>Packaging and destination affect the operation receiving the coffee. Confirm those details for the proposed purchase rather than assuming that a product page establishes them. <a href=\"https:\/\/vinhhiepgl.com\/en\/vietnam-coffee-supplier-export-readiness\/\">Packaging and shipment planning<\/a> covers that next stage once the candidate grade is clear.<\/p>\n<p>There is no fixed price difference or cost saving established by this comparison. Use confirmed offers and your own production results when assessing the purchase. An invented allowance for sorting, wastage or roasting yield would make the decision look precise without giving it a reliable basis.<\/p>\n<h3>Do not assume an internal sorting step will settle the choice<\/h3>\n<p>A roastery may already have its own intake or preparation practices. Those practices should be considered as they actually operate, rather than used to assume that any difference between two grades can be removed later. The published specification describes the proposed input; your own process needs its own evidence.<\/p>\n<p>If you are considering an additional handling step, establish what it is intended to remove or control, how it will be carried out and what result you can verify. Do not estimate a saving by assuming a fixed removal percentage from the catalogue maximum. A maximum is not a measured quantity in the material you will receive.<\/p>\n<p>The decision may simply be that one grade fits your stated input requirement more directly. In another operation, a different grade may remain a candidate for testing. Both decisions can be reasonable when they are based on the actual production arrangement and confirmed offer, rather than a universal claim that one label is always the better purchase.<\/p>\n<p>Keep that reasoning with the product selection. It explains why the chosen grade belongs in the recipe and receiving operation. It also gives the next buyer a useful reference when a future offer differs, without turning the current choice into a rule for every roastery.<\/p>\n<h2 id=\"vh-story-2311-8\">Choose the grade for a defined job<\/h2>\n<p>Clean and Standard become useful when their published conditions help you choose an input to test or buy. Read the actual categories, preserve minimum and maximum qualifiers, and separate catalogue limits from observed results. Then evaluate the coffee in the product you intend to make.<\/p>\n<p><a href=\"https:\/\/vinhhiepgl.com\/en\/contact-us\/\">Contact Vinh Hiep about the grade you require<\/a> when you know which condition or candidate needs confirmation. If you are still organising the broader choice, <a href=\"https:\/\/vinhhiepgl.com\/en\/how-to-evaluate-a-vietnam-coffee-supplier\/\">choosing a Vietnam supplier for your roastery<\/a> starts with your application and follows the decision through a trial.<\/p>\n<p>The <a href=\"https:\/\/vinhhiepgl.com\/en\/\">Vinh Hiep supplier overview<\/a> introduces the range. The <a href=\"https:\/\/vinhhiepgl.com\/en\/coffee-knowledge\/\">green coffee knowledge<\/a> and <a href=\"https:\/\/vinhhiepgl.com\/en\/coffee-sourcing\/\">coffee sourcing<\/a> sections support the technical and purchasing work. The useful outcome is a specification you understand and a candidate you have a reason to evaluate.<\/p>\n<h2 id=\"vh-story-2311-9\">Sources<\/h2>\n<ul>\n<li><a href=\"https:\/\/vinhhiepgl.com\/en\/san-pham\/robusta-grade-1-s16-clean\/\">Vinh Hiep, S16 Clean<\/a>: published separate black and broken limits and other physical conditions.<\/li>\n<li><a href=\"https:\/\/vinhhiepgl.com\/en\/san-pham\/robusta-grade-1-s16-standard\/\">Vinh Hiep, S16 Standard<\/a>: combined black-and-broken limit and other product conditions.<\/li>\n<li><a href=\"https:\/\/vinhhiepgl.com\/en\/san-pham\/robusta-grade-1-s18-clean\/\">Vinh Hiep, S18 Clean<\/a>: specifications for the Clean line in screen 18.<\/li>\n<li><a href=\"https:\/\/vinhhiepgl.com\/en\/san-pham\/robusta-grade-1-s18-standard\/\">Vinh Hiep, S18 Standard<\/a>: specifications for the Standard line in screen 18.<\/li>\n<\/ul>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Compare Vinh Hiep Clean and Standard Robusta specifications, understand separate and combined defect limits, and choose a grade for a roast trial.<\/p>\n","protected":false},"author":1,"featured_media":2162,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[50],"tags":[],"class_list":["post-2311","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-vietnam-coffee-supplier"],"acf":[],"_links":{"self":[{"href":"https:\/\/vinhhiepgl.com\/en\/wp-json\/wp\/v2\/posts\/2311","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vinhhiepgl.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vinhhiepgl.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vinhhiepgl.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/vinhhiepgl.com\/en\/wp-json\/wp\/v2\/comments?post=2311"}],"version-history":[{"count":3,"href":"https:\/\/vinhhiepgl.com\/en\/wp-json\/wp\/v2\/posts\/2311\/revisions"}],"predecessor-version":[{"id":2466,"href":"https:\/\/vinhhiepgl.com\/en\/wp-json\/wp\/v2\/posts\/2311\/revisions\/2466"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vinhhiepgl.com\/en\/wp-json\/wp\/v2\/media\/2162"}],"wp:attachment":[{"href":"https:\/\/vinhhiepgl.com\/en\/wp-json\/wp\/v2\/media?parent=2311"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vinhhiepgl.com\/en\/wp-json\/wp\/v2\/categories?post=2311"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vinhhiepgl.com\/en\/wp-json\/wp\/v2\/tags?post=2311"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}