1. ODLAB The Graphite Block Acid Digestion System (ECO-PRE)

2. The existing digestion method’s sample digestion figures ODLAB The corrosion happen and sample contamination The harmful gas happen and loss. The unbalanced heating temperature

3. The digestion system’s component(basic) ODLAB Graphite hot block (OD-98-HP) Graphite block (OD-98-24Hole) Graphite block (OD-98-12Hole) Teflon digestion vessel (BaekDu™)

4. The material characteristics ODLAB Handmade controller(Acrylic) Teflon coated on the graphite block Corrosion proof (Teflon and graphite ) Sample digestion figure

5. The Teflon acid collection digestion vessel (BaekDu™)’s structure & principle ODLAB Heating Evaporation peak Falling Re-Evaporation Evaporation Circulation/Repetition Collection tube Digestion vessel Emission part

6. ④ ⑤ ⑦ ⑨ 210 ℃ ③ End 160 ℃ ② 170 ℃ 140 ℃ ⑧ 120 ℃ ⑥ ① ① ② ③ ④ ⑤ ⑥ ⑦ ⑧ ⑨ ⑩ ⑩ The digestion process for each sample and temperature/ time program

7. 210 ℃ End 160 ℃ 170 ℃ 140 ℃ 120 ℃ The digestion time for each sample 90min 2~3hrs 3~4hrs 6~7hrs Jewelry Wastewater Fertilizer Filter Plant body Bionics Food Soil Compost Food Plastic Oil Marine sediment

8. The digestion vessel’s different type and size. ODLAB 1. 300ml 2. Brand new product 3. 3 different type vessels digestion vessel for work environment analysis 50ml(left) / 100ml(right)

9. The installation of the stirrer (for stirring with heating for 24ea samples simultaneously) ODLAB

10. The hexavalent chromium digestion(USEPA-3060A) ODLAB Measure Sample 2.5g accurately and place into acid digestion vessel Heated digestion solution 50ml at 90~95 ℃ (Dissolve NaOH20g+Na2CO330g in reagent water in a one- liter volumetric flask and dilute to the mark) Add magnesium chloride 0.4g into digestion vessel Add 0.1M phosphate buffer 0.5ml into digestion vessel. Heating and stirring (90 ℃ ~95 ℃ for 60minutes Filtering after air–cooled (Filter membranes 0.45um) 5minutes stirring after cover with the collection tube. Used 5.0M HNO3 for PH7.5 ± PH0.5 adjust Caution: If failure to meet between PH7.5 ± PH0.5 range, Necessitate redigestion of the samples. Digestion vessel cleaning with distillated water.

11. Application ODLAB  The soil aqua-regia digestion method according to the soil contamination official test method  The heat digestion method according to the food official test method -The sample quantity 5g digestion in the food for cd,pb analysis  The heating block digestion method according to the US-EPA3050  The hexavalent chromium elution digestion method according to the US-EPA3060A  The marine waste,sediment digestion according to the marine contamination official test method

12. ODLAB The recovery rate KRISS water parsley certified reference material(CRM) - plant body PbCd Certified value1.05ppm*0.066ppm Sample 11.048ppm0.068ppm Sample 21.047ppm0.067ppm Varian ICP-MS, Clean room, ultra high purity nitrogen acie14ml *This table is the reference value JSAC Plastic High level certified reference material(CRM) - polymer PbCdCr Certified value945ppm93.6ppm946.3ppm Sample 1957.4ppm88.6ppm902ppm Sample 2925.8ppm89.7ppm897.3ppm Perkin Elmer ICP,semi-conductor class nitrogen acid15ml, hydrogen acid 2ml, sulfuric acid2ml

13.  Cadmium (Cd) : 0.288±0.009 mg/kg (Z-Score 0.15)  Lead (Pb) : 1.561±0.059 mg/kg (Z-Score 0.24) Certified value : 0.263±0.004mg/kg Certified Value : 1.463±0.025mg/kg The statistical interpretation for the analysis result

14. Result ODLAB

15. The product certification and safety policy ODLAB

16. Customer List ODLAB  National institute of environmental including analysis organization (Delivered 100places)  Seoul university,seonggyungwan university including 20universities  Research insitute of public health and environment & agricultural product quality management service (20places)  Forest research institute & food companies through Japan agency(25places)  Taiwan agency including southeast asia (6places)  Currently consult with Indo & Germany company agency

17. The ODLAB’s handling item list ODLAB 1) Certified Reference Material(CRM) -Search for the wanted product. 2) High purity/Ultra high purity acid -recommended for trace element analysis 3) ICP,ICP-MS attachment and consumable -Menufacturer original product/good price

18. Question ODLAB Thank you