Latest ammonium sulphate Tenders | Government ammonium sulphate Tenders

CTN :42921957

15 Dec, 2025 NA

Saraidhela - Jharkhand

Tender For corrigendum : supply of rhizobium inocultants (bio fertilizer)-is:8268 (q3)

Central Government/Public Sector

CTN :42830901

22 Dec, 2025 NA

Sundergarh - Odisha

Tender For corrigendum : supply of consumable items stains of pathology - light green sf yellowish, packing-25gm , eosin yellow, pack:25gm , aluminium ammonium sulphate, pack:20gm , methylene blue, ar, gr,25gm , brilliant crystal, blue, pack:25gm , formic acid , mercury oxide (red), packing-100gm , card, thermo shandon filter, ref:5991022 , microtome plastic embedding ring, 25mm , blades, 3153735 hp 35 ultra high profile , oil, microscopic, immersion, make:merck , calcium chloride, 0.25mm, pack: 10x15ml , leishman stain powder, 25gm pack

Central Government/Public Sector

CTN :43148333

01 Jan, 2026 7.08 Lacs

Khorda - Odisha

Tender For supply of library books c c - horticultural crops , postharvest technology of horticultural crops , postharvest technology of horticultural crops vol 07 , postharvest anintroductionto the physiology and handling of fruitandvegetables , practical handbook of ddcby , practical manual of nursery management , practical manual on organic farming , practical plant biochemistry , principles and applications of soil microbiology , principles and practice of plant breeding , principles of agronomy , principles of applied entomology , principles of field crop production , principles of genetics , principles of insect morphology , principles of pestiside chemistry by s k handa , principles of plant breeding , principles of plant nutrition , principles of plant pathology , principles of seed technology , principles of soil chemistry , principles of vegetables breeding , production technology for fruit and plantation crops , production technology of tropical and sub tropical fruit crops , production technology of tropical and sub tropical fruits crops , production technology of under exploited vegetable crops , prokaryotic symbionts in plants , protected cultivation of vegetable crops , protected cultivation of vegetables crops , rajmohans wife , recent advances in life sciences proc xvazra intern conf , rhs colour charts 6th edition , rice pest management , rice white tip nematode , rice the queen of cereals , river of fire aag ka darya , sapiens a brief history of humankind , seed pathology 2 vol set , seed science and technology , soil acidity and liming , soil analysis , soil chemistry , soil chemistry a basicelements , soil microbiology ecology and biochemistry , soil micromorphology and soil classification , soil physical chemistry , soil plant and water analysis , soil sampling preparation and analysis , soil science , soil science an introduction , statistical methods ans biometrical technique in plant breeding , statistical methods for research workers , swamy compilation of ccs cca rules , swamys compilation of general finances rules and advances to central govt servants , swamys complete manual on establishment and adminstration , synthetic pesticides , system atic of fruit crops , systematic pomology vol 1 2 , tales from firozsha baag , tamas , teach yourself hindi , test book of soil physics by a k saha , test book of vegetables tubercrops and spices , text book of entomology , text book of farming systems , text book of fungi bacteria and viruses , text book of pedology concepts and applications , text books of plant nematology by upadhyay , text books of rural development entrepreneurship communication , textbook of agricultural meteorology , textbook of glaustas olericulture , textbook of introductory plant nematology , textbook of introductory plant nematology , textbook of vegetables tubercrops and spices , the avocado botany production and uses , the black book of speaking fluent english , the cassava mosaic virus disease , the completete chnology book on bio fertilizer and organic farming , the culture of vegetables and flowers from seeds and roots , the elements of plant virology basic concepts and practical class exercises , the essentials of agriculture , the financial expert , the first promise , the fruits kripa sankar , the god of small things , the guide , the hungry tide , the inheritance of loss , the insects structure and functions , the insects structure functions and biodiversity , the last bee keeper , the ministry of utmost happiness , the palace of illusions , the physiology of vegetable crops 2nd edition , the plant root and its environment , the private life of an indian prince , the shadow lines , the theory and practice ofthe dewey decimal //bid details 2 / 117 classification system , the white tiger , theory of cataloguing , thinking fast and slow , trace elements in soils and plants , transformational leadership and innovative behaviour , transforming agriculture transforming india 3 vol set , trans

CTN :42599240

26 Dec, 2025 NA

Mumbai - Maharashtra

Tender For corrigendum : sch 6 laboratory chemicals, stains, reagents, etc. by tender - sch vi (supply of laboratory chemicals, stains & reagent solutions) - sch vi (supply of laboratory chemicals, stains & reagent solutions), hydrochloric acid l.r., salicylic sulphonic acid a.r., sulphuric acid a.r.assay 96-98%, mac conkey s agar with 0.15% bile salt, with crystal violet and nacl., nutrient agar - bacteriological grade, ammonium sulphate a.r., dextrose (anhydrous) a.r., diethyl ether a.r. 99% pure, formaldehyde 40% a. r. (1x 25 ltrs), isopropyl alcohol a.r. 99-100%, potassium iodide a.r. 99.8%, xylol (extra pure) a. r., elisa kits for hbs ag.(3rd generation kits)- one step sandwich elisa using monoclonal antibody & conjug-ate coated wells., hydrochloric acid commercial grade for cleaning purpose., vdrl antigen kits containing stabilised emulsions of cardiolipin lecithin & cholesterol adjusted to required sensitivity.the result should be observable under microscope., elisa kit for detection igm antibody to pathogenic leptospirosis shelf life to be one year atleast at the time of receipt of kit., ultra sensitive hbsag elisa screening test capable of detecting escape mutants., direct bilirubin kit method-jendrassik & grofs end- point method (diazotised sulphanilic acid)reagent type-liquid stable / lyophilized minimum reconstitution stability-on board : 3 days after mixing r1 & r2 linearity -10mg/dl (ce mark on kit), blood urea nitrogenmethod-initial rate uv-kinetic methodreagent type-liquid stable / lyophilized minimum reconstitution stability-45 days at 2 to 8 degreeslinearity - 250mg/dl (ce mark on kit), creatinine method-initial rate alkaline picrate method reagent type- 2reagent liquid stable / lyophilizedminimum reconstitution stability-liquid stable reagentslinearity -30mg/dl (ce mark on kit), vibrio cholerase polyvalent 01 antisera, vibro cholerae ogawa antisera, vibro cholerae inaba antisera, salmonella polyvalent antisera (a-g), salmonella group 02 antisera, salmonella group 04 antisera, salmonella group 09 antisera, colistin mic (e-test) strips, mupirocin (200mcg), antisera clostridium species, antisera e. coli o157, spore strips (bacillus steothermophilus spores for steam sterilization-10 spores), iodine crystals, rapid test for detection of hiv-1 & hiv-2 ab s and p24 antigen from serum , plasma and whole blood. specificity and sensitivity of the test should be 100% for all sample types sample volume should be lessthan 50ulno buffer addition should be required for testing of serum and plasma samples.test should be who prequalified, nitrate reduction kit, dubos broth (tween 80), phenopthalein disulphate tripotassium, yeast nitrogen base agar (twin pack), rapid detection of salmonella typhi igg/igm antibody test, rapid detection of dengue ns1 antigen & igg/igm antibody test in same card (rapid dengue duo test), rapid test to detect mpt 64 antigen of mycobacterium tuberculosis complex, the test principlecould be immunochromatography or agglutination, dengue-chikungunya rtpcr kit, potassium tellurite blood agar, rtpcr kit for detecting dengue virus, rtpcr kit for detecting influenza a, h1n1, h3n2 & influenza b virus, viral rna extraction kit - automated,magnetic bead based compatible with kingfisher flex & hi media, rapid test for crypto+giardia+entamoeba, albumin bovine serum (a. r. grade ), sterile microtitre assay plate 96 well with lid clear round bottom non treated polypropylene, f-18 fdg (to be delivered to nuclear medicine department due to short half life when ordered ), colistin microbroth dilution test (ready to use predrug-coated plates), hepatitis b virus e antigen elisa (hbeag), cefotaxime e strip (0.016- 256 mcg/ml), ceftazidime avibactum e strip (0.016- 256 mcg/ml), chloramphenicol e strip (0.016- 256 mcg/ml), class v chemical indicators strips for steam sterilizers., distilled water, hepatitis b core igm elisa, manual nucleic acid extraction kit (silica column based), meropenem

CTN :42815574

15 Dec, 2025 NA

Saugor - Madhya Pradesh

Tender For corrigendum : rates contract tender for rates of chemical , reagents and certified reference materials (crms) - list of chemical & reagents, 1-10 phenanthroline monohydrate -ar, 1-amine-2 napthol-4 sulphonic acid-ar, acetic acid glacial-ar, acetone -ar, acetone -ar, activated charcoal-ar, alandum (08 to 14 mesh)-ar, aluminium hydroxide gel-ar, aluminium hydroxide powder-ar, ammonia solution 28-30% (ammonium hydroxide)-ar, ammonium acetate-ar, ammonium chloride -ar, ammonium citrate dibasic (di-ammonium hydrogen citrate)-ar, ammonium molybdate-ar, ammonium oxalate-ar, ammonium thiocynate-ar, antimony potassium tarterate-ar, ascorbic acid-ar, azomethin-h-ar, barium chloride dihydrate-ar, barium diphenyle amine sulphate-ar, barium hydroxide-ar, benzene 99.5%-ar, benzol konium chloride (zephiran chloride)-ar, benzol konium chloride (zephiran chloride)-ar, bismuth nitrate-ar, biuret (reagent), biuret solution (reagent) (150-1,000 g/ml), boric acid-ar, bromocresol blue indicators-ar, bromocresol green indicators-ar, bromophenol blue indicator-ar, bromophenol purple indicator-ar, bromothymol blue indicators 0.4%-ar, buffer tablets- 4 ph-ar, buffer tablets- 7 ph-ar, buffer tablets- 9.2 ph-ar, calceine indicator-ar, calcium carbonate powder-ar, carbon disulphide (cs2)-ar, carbon tetrachloride-ar, charcoal (activated) -ar, charcoal reagents (14 to 20 mesh)-ar, chloroform-ar, chromium metal - 100 mesh-ar, citric acid anhydrous-ar, citric acid anhydrous-ar, copper sulphate pentahydrate (coso4,5h2o)-ar, dargo charcol-ar, deverdas alloy-ar, di sodium oxalate-ar, di sodium oxalate-ar, diphenylamine indicators-ar, disodium edta -ar, disodium dihydrate edta -ar, dithiozone-ar, dtpa-ar, erichrome black- t indicator-ar, ethyl alcohol- 95% (ethanol)-ar, ethylene diamine tetra acetic acid (edta)-ar, ferric ammonium sulphate (iii)-ar, ferrous ammonium sulphate (ii)-ar, fluorescein-ar, formaldehyde - 37-40%-ar, glass wool-ar, gumaacacia powder-ar, hydrochloric acid-ar, hydrochloric acid-ar, hydrogen peroxide (h2o2) 30%-ar, hydroquinone-ar, hydroxylamine hydrochloride-ar, isoamyle alcohol(methyleblutonol) 99%-ar, l. ascorbic acid-ar, lab wash (neutral), lead acetate (ii) trihydrate-ar, litmus paper blue-ar, litmus paper red-ar, magnesium oxide (light, mgo)-ar, magnesium sulphate-ar, manganese sulphate-ar, mannitol-ar, mercuric chloride (ii)-ar, mercuric iodide 99%-ar, methnol-ar, methyl blue indicators-ar, methyl blue indicators-ar, methyl purple indicators-ar, methyl red indicators-ar, mono-calcium phosphate-ar, n- amyl alcohol (1-pentanol)-ar, n-hexen-ar, nitric acid-ar, nitric acid-ar, nitrobenzene-ar, orthrophosphoric acid-ar, oxalic acid-ar, p- nitrophenol-ar, paraffin-ar, patton & readers indicators-ar, petroleum sprit (boiling point 40 to 60 c)-ar, phenolphthalein indicators-ar, phosphorous pentaoxide-ar, potassium bromate-ar, potassium chloride-ar, potassium chromate-ar, potassium dichromate-ar, potassium dihydrogen orthophosphate-ar, potassium ferrocynide-ar, potassium hydrogen phthalate-ar, potassium hydroxide pellets-ar, potassium iodide -ar, potassium nitrate-ar, potassium periodate-ar, potassium permanganate-ar, potassium peroxide-ar, potassium sulphate anhydrous-ar, potassium thiocynate crystals-ar, quinoline solution-ar, quinoline solution-ar, salicylic acid-ar, selenium powder-ar, silica gel self-indicator-ar, silicone grease high vacuum-ar, silver nitrate-ar, sodium acetate trihydrate-ar, sodium arsenate-ar, sodium bicarbonate-ar, sodium bisulfide-ar, sodium carbonate-ar, sodium chloride-ar, sodium cyanide -lr, sodium diethylethiocorbonate trihydrate-ar, sodium fluoride-ar, sodium hydroxide pellets-ar, sodium hydroxide pellets-ar, sodium molybdate-ar, sodium molybdate-ar, sodium oxalate-ar, sodium oxalate -ar, sodium potassium tarterate-ar, sodium sulphate anhydrous-ar, sodium tetra phenyl boron (stpb)-ar, sodium thiosulphate-ar, stannous chloride / tin (ii) chloride-ar, starch -ar, strontium chloride-ar, sulphur powder-ar, s

State Government

CTN :43134412

19 Dec, 2025 NA

Midnapur - West Bengal

Tender For suppliers and vendors for chemical and glass goods agar (500gm) , ammonium nitrate (500gm) , acetic acid (2.5l) , ammonium persulfate , ammonium sulfate (500gm) , alpha napthol (250gm) , beef extract (500gm) , beta-mercaptoethanol (100ml) , bovine serum albumin (5gm) , bradford reagent (500ml) , blood agar base (100gm) , butanol (2.5l) , calcium carbonate (500gm) , calcium sulfate (500gm) , calcium chloride (500gm) , cetrimide agar (100gm) , chloroform (2.5l) , citrate agar , cotton (non-absorbing) , cupric chloride (500gm) , cupric sulphate (500gm) , diethyl ether (2.5l) , dinitrosalicylic acid (100gm) , dipotassium hydrogen phosphate (500gm) , disodium hydrogen phosphate (500gm) , ethanol (500 ml) , emb broth (100gm) , ferric chloride (500gm) , ferrous sulphate (500gm) , ferrous ammonium sulphate (500gm) , folin-ciocalteau reagent (100ml) , glutaraldehyde (500ml) , hydrochloric acid (2.51.) , hydrogen peroxide 30% (500ml) , immersion oil (30gm) , isopropanol (2.5l) , isoamyl alcohol (500ml) , isopropyl alcohol (500ml) , king's medium b (100gm) , potato dextrose broth (500gm) , potassium acetate (500gm) , potassium hydroxide (500gm) , sabouraud dextrose broth (100gm) , simmons citrate agar (100gm) , sodium hydroxide (500gm) , sodium chloride (500gm) , triple sugar iron agar (100gm) , tryptone broth (100gm) , tissue paper roll , variable volume micropipette 20-200 l , variable volume micropipette 200-1000 l , yeast and mould broth (500gm) , leishman's stain (250ml) , micro centrifuge tube (2ml) 1 box

corporations/Associations/Others

CTN :42968242

18 Dec, 2025 9.62 Lacs

Sealdah - West Bengal

Tender For corrigendum : supply of mustard oil cake , bone meal , sterameal mixture of blood bone neem cake and other nutrients , single super phosphate powder phosphorous 16 percent p ws 14 point 5 percent s 11 percent , urea , murate of potash 60 percent , ground nut oil cake , neem cake , hoof and horn mea , dap 18 46 0 , npk 20 20 20 , npk 19 19 19 , npk 13 00 45 , mag mix magnesium sulphate 9 point 6 percent 500 gm bottle , ammonium sulphate nh4 2 so4 500 gm bottle , ferrous iron ii sulphate heptahydrate feso4 7h20 500gm bottle , potassium di hydrogen phosphate 500 gm bottle , potassium nitrate extra pure kno3 500 gm , potassium sulphate k2so4 500 gm , calcium sulphate dihydrate pure 98 percent caso4 2h20 500 gm , deltamethrine 2 point 8 ec 2 point 8 percent w w , mancozeb 75 percent w p , dimethoate 30 percent ec , imidachloprid 17 point 8 percent , carbendazim 12 percent and mancozeb 63 percent w p 100 grm pkt , paecilomyces lilacinus 1 point 0 percent w p , copper oxychloride 50 percent w p 500 gm packet , carbafuran 3 percent cg , carbendazim 50 percent w p 500 gm , chloropyriphos 50 percent plus cypermethrine 5 percent ec 100 ml bottle , zinc phosphide 500 gm , acetamiprid 20 percent sp 100 gm pkt , kaka biopesticide natural lactone 0 point 4 percent plus natural alkaloids 0 point 2 percent plus aqueous media 99 poit 4 percent 100 ml bottle

State Government

CTN :43115843

24 Dec, 2025 4.48 Lacs

Karwar - Karnataka

Tender For supply of chemicals and glassware for rdwsd dist. and sub-division water testing laboratory. - copper (ii) sulphate powder, crm (99.90%) 80gm, conductivity standard 1413, bnd (nist), iron standard solution 1000mg/l, bnd (nist, accordance with iso 17034), turbidity 4000 ntu calibration standard (accordance with iso 17034) 500ml, ph buffer 9.20, (nist, iso 17034) bnd 500ml, ph buffer 7.0, (nist, iso 17034) bnd 500ml, ph buffer 4.0, (nist, iso 17034) bnd 500ml, zirconium oxychloride octahydrate ar 100gm, glass- droppers, phenanthroline monohydrate 1, 10 5gm, with nabl certificatevolumetric pipette 10ml a class , micropipette micropipette(1-5ml), a class measuring cylinder 5ml, glassware cleaner 1ltr, for turbidity meter - cuvette , cuvette for uv quartz 1 pair, ar sodium thisulphate 500gm, barium chloried ar 500gm, permanganate potassium 500gm, phenolphthalein indicator 100gm, ferrous ammonium sulphate ar 500gm, potassium nitrate ar 500gm, iso-propyl alcohol ar 500ml, magnesium chloride ar 500gm, glacial acetic acid ar 500ml, eriochrome black t ar 25gm, ammonium acetate ar 500gm, silver nitrate ar 25gm, calconcarboxylic acid ar (pr indicator) 25gm, ammonium chloride ar 500gm, ammonia solution ar 500ml, edta ar 500gm, conc. hydrochloric acid ar 500ml, ar hydroxylamine hydrochloride 500gm, potassium ar chromate 500gm, spadns ar reagent 25gm

State Government

CTN :43096598

22 Dec, 2025 19.98 Lacs

Bikaner - Rajasthan

Tender For establishment of phe lab at hydrology and water management institute bikaner - part a equipements, ph meter for lab, digital ph meter ( pentype)for field, ec meter for lab, digital ec meter( pen type) for field, nephelo meter (turbidimeter) direct reading digital display direct reading range:0-100 & 100-1000, kjeldahl digestion and distillation unit, bacteriological incubator 60cm x 60cm x60cm (rg -100-15) temp control device range o to 50 c medium size, autoclave medium size steel cabinet 600x450mm, microscope binoculer 10x 45, vaccum pump 1/6 hp, ion meter with floride ion selective electrode( thermo make or equivalent ), thermometer100 d c, thermometer 250 d c, stopwatch analog, part-b chemicals, hydrochloric acid (ar grade) packing size 2.5 l, sulphuric acid (cp grade) gr 1.84 packing size 5l, sulphuric acid( fumming) oleum packing size 250g, acetic acid(ar grade) packing size 500ml, alizarin red s packing size 100g, arsenic trioxide packing size 500g, aluminium potassiom sulphate packing size 500g, ammonium accetate (ar. grade) packing size 500g, ammonium chloride (ar. grade) packing size 500g, ammonium hydroxide /ammonia solution(ar. grade) packing size 500ml, ammonium purpurate/muroxide (ar. grade) packing size 5g, barrium chloride (ar. grade) packing size 500g, boric acid packing size 500g, brilliant green packing size 25g, calcium carbonate (ar. grade) an hydrous packing size 500g, calcium chloride (fused) packing size 500g, calcium chloride (fused) packing size 500g, edta-di sodium salt (ar. grade) packing size 100g, ethanol (ar. grade) packing size 500ml, erichrome black-t (ar. grade) packing size 25g, ferrous ammonium sulphate (ar. grade) packing size 500g, hydroxyl amine hydrochloride (ar. grade) packing size 500g, hydrogen per oxide packing size 500ml, lead acitate packing size 500g, methyl orange packing size 25g, methylated sprit packing size 2500ml, macconkey broth, dehydrated granulated packing size 500g, lactose packing size 500g, phenolphthalein indicator packing size 25g, potassium hydroxide (ar. grade) packing size 500g, 1-10 phenanthroline , mono hydrrate packing size 100g, potassium permagnate (ar. grade) packing size 500g, phynol white packing size 500g, potassium hydrogen phathleate (ar. grade) packing size 500g, ph indicator paper range 2 to 14 with comparator packing size 1pkt, pottasium chromate (ar. grade) packing size 500g, pottasium dichromate (ar. grade) packing size 500g, potassium iodide (ar. grade packing size 100g, potassium nitrate (ar. grade) packing size 500g, peptones packing size 500g, silver nitrate (ar. grade) packing size 250g, silver diethyldithiocarbamate packing size 25g, sodium acetate (ar. grade) packing size 250g, sodium arsenate(ar. grade) packing size 250g, sodium sulphate anhydrous (ar. grade) packing size 500g, sodium sulphate , non hydrta na2s.9h20 packing size 500g, sodium chloride (ar. grade) packing size 500g, sodium fluoride (ar. grade)anhydrus packing size 500g, sodium hydroxide (ar. grade) packing size 500g, sodium thio sulphate (ar. grade) packing size 500g, stannous chloride(ar grade) packing size 500g, starch soluble packing size 500g, part-c glassware, distilled water system with stablizer double distill water 2.5 liter per hour, burette 50 ml, burette 100 ml, burette automatic 50 ml, pipette with bulb 5 ml, pipette with bulb 10 ml, pipette with bulb 25 ml, pipette with bulb 50 ml, pipette with graduated 1 ml, pipette with graduated 2 ml, pipette with graduated 5 ml, pipette with graduated 10 ml, pipette with graduated 25 ml, reagent glass bottle with stopper 150 ml, reagent glass bottle with stopper 250 ml, reagent glass bottle with stopper 500 ml, reagent glass bottle with stopper 1000 ml, reagent glass bottle with stopper 2000 ml, conical flask 100 ml, conical flask 500 ml, conical flask 1000 ml, conical flask 250 ml, volumetric flask with stopper 50 ml, 100 ml, 250 ml, 500 ml, 1000 ml, glass beeker 100 ml, 250 ml, 500 ml, 1000 ml, measuring cylinder 50 m

CTN :43112234

30 Dec, 2025 3.00 Lacs

Bastar - Chhattisgarh

Tender For supply of title 01 :--ammeter, milliammeter, micrometer , voltmeter , rheostat, battery eliminator , connecting wire , meter bridge , resistance wire , one way key , pencil jockey , step down transformer , horse shoe magnet , bar magnet , optical bench with accessories 1 meter brass, concave mirror , convex mirror, optical needles , meter scale , concave lens , convex lens , drawing board , glass prism , white sheet paper , traveling microscope with vernier scale , glass slab , iron stand , pn junction diode , spherometer, plane mirror , digital stop watch , gravesand apparatus, hanger with slotted weight 10 gram , hanger with slotted weight 100 gram , helical apparatus hooks law, resonance apparatus , sonometer complete set , tunning fork 512 hertz, newtons law of cooling apparatus , thermometer laboratory thermometer, galvanometer, beaker 150 ml, tripod stand , wire guage , glass rod , funnel 3, filter paper , bunsen burner , test tube 150mm x 18mm , test tube stand , dropper, test tube holder with wooden handle , ignition tube , china dish , tongs , standard flask , pipette 10ml , burrette borosilicate glass , concical flask 150 ml , clamp stand , wash bottle , aluminium hydroxide , ferric hydroxide , hydrogen peroxide , potassium iodate , sodium sulphate , copper sulphate , sodium nitrate , acetone, chloroform , potash alum , oxalic acid , ferrous ammonium sulphate, formic acid, benzoic acid , iodine solution , compound microscope , test tube 150mm x 18mm , test tube holder with wooden handle , beaker 100 ml, beaker 250 ml, conical flask 250 ml, funnel, dropper, watch glass 2, measuring cylinder 100 ml, spirit lamp burner , tripod stand , wire guage , dissection box set of 19 pcs, plain slide , cover slip , permananet slide , model of dna , model of rna , common plant specimen for spotting , common animal phyla specimen for spotting , staining solution , safranin , methylene blue , aceto carmine , thermometer, stethoscope, glycerine , ph pper, litmus paper red, litmus paper blue , filter paper

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